A non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids.
Any member of the group of ENDOPEPTIDASES containing at the active site a serine residue involved in catalysis.
Peptide hydrolases that contain at the active site a SERINE residue involved in catalysis.
Exogenous or endogenous compounds which inhibit SERINE ENDOPEPTIDASES.
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
A key enzyme in SPHINGOLIPIDS biosynthesis, this enzyme catalyzes the pyridoxal-5'-phosphate-dependent condensation of L-SERINE and PALMITOYL COENZYME A to 3-dehydro-D-sphinganine. The enzyme consists of two different subunits.
The phosphoric acid ester of serine.
An enzyme that catalyzes the conversion of L-SERINE to COENZYME A and O-acetyl-L-serine, using ACETYL-COA as a donor.
A pyridoxal phosphate enzyme that catalyzes the reaction of glycine and 5,10-methylene-tetrahydrofolate to form serine. It also catalyzes the reaction of glycine with acetaldehyde to form L-threonine. EC 2.1.2.1.
A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other nucleotides as phosphate donors.
An essential amino acid occurring naturally in the L-form, which is the active form. It is found in eggs, milk, gelatin, and other proteins.
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Genetically engineered MUTAGENESIS at a specific site in the DNA molecule that introduces a base substitution, or an insertion or deletion.
The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
The parts of a macromolecule that directly participate in its specific combination with another molecule.
Established cell cultures that have the potential to propagate indefinitely.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
Proteins prepared by recombinant DNA technology.
The rate dynamics in chemical or physical systems.
Serum serine proteases which participate in COMPLEMENT ACTIVATION. They are activated when complexed with the MANNOSE-BINDING LECTIN, therefore also known as Mannose-binding protein-Associated Serine Proteases (MASPs). They cleave COMPLEMENT C4 and COMPLEMENT C2 to form C4b2a, the CLASSICAL PATHWAY C3 CONVERTASE.
A family of serine proteinase inhibitors which are similar in amino acid sequence and mechanism of inhibition, but differ in their specificity toward proteolytic enzymes. This family includes alpha 1-antitrypsin, angiotensinogen, ovalbumin, antiplasmin, alpha 1-antichymotrypsin, thyroxine-binding protein, complement 1 inactivators, antithrombin III, heparin cofactor II, plasminogen inactivators, gene Y protein, placental plasminogen activator inhibitor, and barley Z protein. Some members of the serpin family may be substrates rather than inhibitors of SERINE ENDOPEPTIDASES, and some serpins occur in plants where their function is not known.
The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells.
Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.
A family of enzymes that catalyze the conversion of ATP and a protein to ADP and a phosphoprotein.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.
A PYRIDOXAL-phosphate containing enzyme that catalyzes the dehydration and deamination of L-serine to form pyruvate. This enzyme was formerly listed as EC 4.2.1.13.
The level of protein structure in which combinations of secondary protein structures (alpha helices, beta sheets, loop regions, and motifs) pack together to form folded shapes called domains. Disulfide bridges between cysteines in two different parts of the polypeptide chain along with other interactions between the chains play a role in the formation and stabilization of tertiary structure. Small proteins usually consist of only one domain but larger proteins may contain a number of domains connected by segments of polypeptide chain which lack regular secondary structure.
A di-isopropyl-fluorophosphate which is an irreversible cholinesterase inhibitor used to investigate the NERVOUS SYSTEM.
A group of enzymes removing the SERINE- or THREONINE-bound phosphate groups from a wide range of phosphoproteins, including a number of enzymes which have been phosphorylated under the action of a kinase. (Enzyme Nomenclature, 1992)
Compounds which inhibit or antagonize biosynthesis or actions of proteases (ENDOPEPTIDASES).
Analysis of PEPTIDES that are generated from the digestion or fragmentation of a protein or mixture of PROTEINS, by ELECTROPHORESIS; CHROMATOGRAPHY; or MASS SPECTROMETRY. The resulting peptide fingerprints are analyzed for a variety of purposes including the identification of the proteins in a sample, GENETIC POLYMORPHISMS, patterns of gene expression, and patterns diagnostic for diseases.
An enzyme inhibitor that inactivates IRC-50 arvin, subtilisin, and the fatty acid synthetase complex.
A serine endopeptidase that is formed from TRYPSINOGEN in the pancreas. It is converted into its active form by ENTEROPEPTIDASE in the small intestine. It catalyzes hydrolysis of the carboxyl group of either arginine or lysine. EC 3.4.21.4.
A serine protease found in the azurophil granules of NEUTROPHILS. It has an enzyme specificity similar to that of chymotrypsin C.
The naturally occurring or experimentally induced replacement of one or more AMINO ACIDS in a protein with another. If a functionally equivalent amino acid is substituted, the protein may retain wild-type activity. Substitution may also diminish, enhance, or eliminate protein function. Experimentally induced substitution is often used to study enzyme activities and binding site properties.
A non-essential amino acid. It is found primarily in gelatin and silk fibroin and used therapeutically as a nutrient. It is also a fast inhibitory neurotransmitter.
A subclass of PEPTIDE HYDROLASES that catalyze the internal cleavage of PEPTIDES or PROTEINS.
The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.
Any of various enzymatically catalyzed post-translational modifications of PEPTIDES or PROTEINS in the cell of origin. These modifications include carboxylation; HYDROXYLATION; ACETYLATION; PHOSPHORYLATION; METHYLATION; GLYCOSYLATION; ubiquitination; oxidation; proteolysis; and crosslinking and result in changes in molecular weight and electrophoretic motility.
Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.
A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.
Enzymes that catalyze inversion of the configuration around an asymmetric carbon in a substrate having one (racemase) or more (epimerase) center(s) of asymmetry. (Dorland, 28th ed) EC 5.1.
The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.
The phosphoric acid ester of threonine. Used as an identifier in the analysis of peptides, proteins, and enzymes.
A serine endopeptidase secreted by the pancreas as its zymogen, CHYMOTRYPSINOGEN and carried in the pancreatic juice to the duodenum where it is activated by TRYPSIN. It selectively cleaves aromatic amino acids on the carboxyl side.
An enzyme that catalyzes the oxidation of 3-phosphoglycerate to 3-phosphohydroxypyruvate. It takes part in the L-SERINE biosynthesis pathway.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
Phosphopeptides are short chains of amino acids that contain a phosphate group attached to one or more of their amino acid residues.
A non-essential amino acid that occurs in high levels in its free state in plasma. It is produced from pyruvate by transamination. It is involved in sugar and acid metabolism, increases IMMUNITY, and provides energy for muscle tissue, BRAIN, and the CENTRAL NERVOUS SYSTEM.
Phosphoproteins are proteins that have been modified by the attachment of a phosphate group, which can regulate their activity and function in various cellular processes.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups.
Amino acids that contain phosphorus as an integral part of the molecule.
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
A specific inhibitor of phosphoserine/threonine protein phosphatase 1 and 2a. It is also a potent tumor promoter. (Thromb Res 1992;67(4):345-54 & Cancer Res 1993;53(2):239-41)
A phosphoprotein phosphatase subtype that is comprised of a catalytic subunit and two different regulatory subunits. At least two genes encode isoforms of the protein phosphatase catalytic subunit, while several isoforms of regulatory subunits exist due to the presence of multiple genes and the alternative splicing of their mRNAs. Protein phosphatase 2 acts on a broad variety of cellular proteins and may play a role as a regulator of intracellular signaling processes.
The region of an enzyme that interacts with its substrate to cause the enzymatic reaction.
Single-stranded complementary DNA synthesized from an RNA template by the action of RNA-dependent DNA polymerase. cDNA (i.e., complementary DNA, not circular DNA, not C-DNA) is used in a variety of molecular cloning experiments as well as serving as a specific hybridization probe.
Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes.
A ubiquitous casein kinase that is comprised of two distinct catalytic subunits and dimeric regulatory subunit. Casein kinase II has been shown to phosphorylate a large number of substrates, many of which are proteins involved in the regulation of gene expression.
CELL LINES derived from the CV-1 cell line by transformation with a replication origin defective mutant of SV40 VIRUS, which codes for wild type large T antigen (ANTIGENS, POLYOMAVIRUS TRANSFORMING). They are used for transfection and cloning. (The CV-1 cell line was derived from the kidney of an adult male African green monkey (CERCOPITHECUS AETHIOPS).)
A family of SERINE ENDOPEPTIDASES isolated from Bacillus subtilis. EC 3.4.21.-
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
The sum of the weight of all the atoms in a molecule.
An serine-threonine protein kinase that requires the presence of physiological concentrations of CALCIUM and membrane PHOSPHOLIPIDS. The additional presence of DIACYLGLYCEROLS markedly increases its sensitivity to both calcium and phospholipids. The sensitivity of the enzyme can also be increased by PHORBOL ESTERS and it is believed that protein kinase C is the receptor protein of tumor-promoting phorbol esters.
Serine proteinase inhibitors which inhibit trypsin. They may be endogenous or exogenous compounds.
Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.
A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.
The process of cleaving a chemical compound by the addition of a molecule of water.
Hydrolases that specifically cleave the peptide bonds found in PROTEINS and PEPTIDES. Examples of sub-subclasses for this group include EXOPEPTIDASES and ENDOPEPTIDASES.
A protease of broad specificity, obtained from dried pancreas. Molecular weight is approximately 25,000. The enzyme breaks down elastin, the specific protein of elastic fibers, and digests other proteins such as fibrin, hemoglobin, and albumin. EC 3.4.21.36.
A serine endopeptidase isolated from Bacillus subtilis. It hydrolyzes proteins with broad specificity for peptide bonds, and a preference for a large uncharged residue in P1. It also hydrolyzes peptide amides. (From Enzyme Nomenclature, 1992) EC 3.4.21.62.
An enzyme that catalyzes the hydrolysis of proteins, including elastin. It cleaves preferentially bonds at the carboxyl side of Ala and Val, with greater specificity for Ala. EC 3.4.21.37.
Short sequences (generally about 10 base pairs) of DNA that are complementary to sequences of messenger RNA and allow reverse transcriptases to start copying the adjacent sequences of mRNA. Primers are used extensively in genetic and molecular biology techniques.
Proteolytic enzymes from the serine endopeptidase family found in normal blood and urine. Specifically, Kallikreins are potent vasodilators and hypotensives and increase vascular permeability and affect smooth muscle. They act as infertility agents in men. Three forms are recognized, PLASMA KALLIKREIN (EC 3.4.21.34), TISSUE KALLIKREIN (EC 3.4.21.35), and PROSTATE-SPECIFIC ANTIGEN (EC 3.4.21.77).
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Physiologically inactive substances that can be converted to active enzymes.
The first continuously cultured human malignant CELL LINE, derived from the cervical carcinoma of Henrietta Lacks. These cells are used for VIRUS CULTIVATION and antitumor drug screening assays.
A transfer RNA which is specific for carrying serine to sites on the ribosomes in preparation for protein synthesis.
Serologic tests in which a positive reaction manifested by visible CHEMICAL PRECIPITATION occurs when a soluble ANTIGEN reacts with its precipitins, i.e., ANTIBODIES that can form a precipitate.
A group of enzymes that are dependent on CYCLIC AMP and catalyze the phosphorylation of SERINE or THREONINE residues on proteins. Included under this category are two cyclic-AMP-dependent protein kinase subtypes, each of which is defined by its subunit composition.
Peptides and proteins found in BODILY SECRETIONS and BODY FLUIDS that are PROTEASE INHIBITORS. They play a role in INFLAMMATION, tissue repair and innate immunity (IMMUNITY, INNATE) by inhibiting endogenous proteinases such as those produced by LEUKOCYTES and exogenous proteases such as those produced by invading microorganisms.
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
A large family of signal-transducing adaptor proteins present in wide variety of eukaryotes. They are PHOSPHOSERINE and PHOSPHOTHREONINE binding proteins involved in important cellular processes including SIGNAL TRANSDUCTION; CELL CYCLE control; APOPTOSIS; and cellular stress responses. 14-3-3 proteins function by interacting with other signal-transducing proteins and effecting changes in their enzymatic activity and subcellular localization. The name 14-3-3 derives from numerical designations used in the original fractionation patterns of the proteins.
Proteins found in any species of bacterium.
Transport proteins that carry specific substances in the blood or across cell membranes.
Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases.
Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.
Products of proto-oncogenes. Normally they do not have oncogenic or transforming properties, but are involved in the regulation or differentiation of cell growth. They often have protein kinase activity.
Esterases are enzymes that catalyze the hydrolysis of ester bonds in various biological and medical processes.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
A protein-serine-threonine kinase that is activated by PHOSPHORYLATION in response to GROWTH FACTORS or INSULIN. It plays a major role in cell metabolism, growth, and survival as a core component of SIGNAL TRANSDUCTION. Three isoforms have been described in mammalian cells.
Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.
A single-chain polypeptide derived from bovine tissues consisting of 58 amino-acid residues. It is an inhibitor of proteolytic enzymes including CHYMOTRYPSIN; KALLIKREIN; PLASMIN; and TRYPSIN. It is used in the treatment of HEMORRHAGE associated with raised plasma concentrations of plasmin. It is also used to reduce blood loss and transfusion requirements in patients at high risk of major blood loss during and following open heart surgery with EXTRACORPOREAL CIRCULATION. (Reynolds JEF(Ed): Martindale: The Extra Pharmacopoeia (electronic version). Micromedex, Inc, Englewood, CO, 1995)
The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.
A CALMODULIN-dependent enzyme that catalyzes the phosphorylation of proteins. This enzyme is also sometimes dependent on CALCIUM. A wide range of proteins can act as acceptor, including VIMENTIN; SYNAPSINS; GLYCOGEN SYNTHASE; MYOSIN LIGHT CHAINS; and the MICROTUBULE-ASSOCIATED PROTEINS. (From Enzyme Nomenclature, 1992, p277)
Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely.
Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
Commonly observed structural components of proteins formed by simple combinations of adjacent secondary structures. A commonly observed structure may be composed of a CONSERVED SEQUENCE which can be represented by a CONSENSUS SEQUENCE.
A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS.
A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).
A group of lysosomal proteinases or endopeptidases found in aqueous extracts of a variety of animal tissues. They function optimally within an acidic pH range. The cathepsins occur as a variety of enzyme subtypes including SERINE PROTEASES; ASPARTIC PROTEINASES; and CYSTEINE PROTEASES.
Immunologic method used for detecting or quantifying immunoreactive substances. The substance is identified by first immobilizing it by blotting onto a membrane and then tagging it with labeled antibodies.
A mutation caused by the substitution of one nucleotide for another. This results in the DNA molecule having a change in a single base pair.
A ubiquitously expressed raf kinase subclass that plays an important role in SIGNAL TRANSDUCTION. The c-raf Kinases are MAP kinase kinase kinases that have specificity for MAP KINASE KINASE 1 and MAP KINASE KINASE 2.
The extent to which an enzyme retains its structural conformation or its activity when subjected to storage, isolation, and purification or various other physical or chemical manipulations, including proteolytic enzymes and heat.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in enzyme synthesis.
An enzyme that activates serine with its specific transfer RNA. EC 6.1.1.11.
A group of protein-serine-threonine kinases that was originally identified as being responsible for the PHOSPHORYLATION of CASEINS. They are ubiquitous enzymes that have a preference for acidic proteins. Casein kinases play a role in SIGNAL TRANSDUCTION by phosphorylating a variety of regulatory cytoplasmic and regulatory nuclear proteins.
Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS.
Structurally related forms of an enzyme. Each isoenzyme has the same mechanism and classification, but differs in its chemical, physical, or immunological characteristics.
Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
One of the non-essential amino acids commonly occurring in the L-form. It is found in animals and plants, especially in sugar cane and sugar beets. It may be a neurotransmitter.
Serine-threonine protein kinases that relay signals from CYTOKINE RECEPTORS and are involved in control of CELL GROWTH PROCESSES; CELL DIFFERENTIATION; and APOPTOSIS.
Enzymes that act at a free C-terminus of a polypeptide to liberate a single amino acid residue.
A viscous, hygroscopic amino alcohol with an ammoniacal odor. It is widely distributed in biological tissue and is a component of lecithin. It is used as a surfactant, fluorimetric reagent, and to remove CO2 and H2S from natural gas and other gases.
Transferases are enzymes transferring a group, for example, the methyl group or a glycosyl group, from one compound (generally regarded as donor) to another compound (generally regarded as acceptor). The classification is based on the scheme "donor:acceptor group transferase". (Enzyme Nomenclature, 1992) EC 2.
A sequence of amino acids in a polypeptide or of nucleotides in DNA or RNA that is similar across multiple species. A known set of conserved sequences is represented by a CONSENSUS SEQUENCE. AMINO ACID MOTIFS are often composed of conserved sequences.
A glycogen synthase kinase that was originally described as a key enzyme involved in glycogen metabolism. It regulates a diverse array of functions such as CELL DIVISION, microtubule function and APOPTOSIS.
A eukayrotic protein serine-threonine phosphatase subtype that dephosphorylates a wide variety of cellular proteins. The enzyme is comprised of a catalytic subunit and regulatory subunit. Several isoforms of the protein phosphatase catalytic subunit exist due to the presence of multiple genes and the alternative splicing of their mRNAs. A large number of proteins have been shown to act as regulatory subunits for this enzyme. Many of the regulatory subunits have additional cellular functions.
Chromatography on non-ionic gels without regard to the mechanism of solute discrimination.
The process of moving proteins from one cellular compartment (including extracellular) to another by various sorting and transport mechanisms such as gated transport, protein translocation, and vesicular transport.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
Antibodies directed against immunogen-coupled phosphorylated PEPTIDES corresponding to amino acids surrounding the PHOSPHORYLATION site. They are used to study proteins involved in SIGNAL TRANSDUCTION pathways. (From Methods Mol Biol 2000; 99:177-89)
A species of CERCOPITHECUS containing three subspecies: C. tantalus, C. pygerythrus, and C. sabeus. They are found in the forests and savannah of Africa. The African green monkey (C. pygerythrus) is the natural host of SIMIAN IMMUNODEFICIENCY VIRUS and is used in AIDS research.
An inhibitor of SERINE ENDOPEPTIDASES. Acts as an alkylating agent and is known to interfere with the translation process.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
The aggregation of soluble ANTIGENS with ANTIBODIES, alone or with antibody binding factors such as ANTI-ANTIBODIES or STAPHYLOCOCCAL PROTEIN A, into complexes large enough to fall out of solution.
A cell line derived from cultured tumor cells.
A non-essential amino acid that is synthesized from GLUTAMIC ACID. It is an essential component of COLLAGEN and is important for proper functioning of joints and tendons.
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Process of generating a genetic MUTATION. It may occur spontaneously or be induced by MUTAGENS.
A papain-like cysteine protease that has specificity for amino terminal dipeptides. The enzyme plays a role in the activation of several pro-inflammatory serine proteases by removal of their aminoterminal inhibitory dipeptides. Genetic mutations that cause loss of cathepsin C activity in humans are associated with PAPILLON-LEFEVRE DISEASE.
Five-membered heterocyclic ring structures containing an oxygen in the 1-position and a nitrogen in the 3-position, in distinction from ISOXAZOLES where they are at the 1,2 positions.
One of the mechanisms by which CELL DEATH occurs (compare with NECROSIS and AUTOPHAGOCYTOSIS). Apoptosis is the mechanism responsible for the physiological deletion of cells and appears to be intrinsically programmed. It is characterized by distinctive morphologic changes in the nucleus and cytoplasm, chromatin cleavage at regularly spaced sites, and the endonucleolytic cleavage of genomic DNA; (DNA FRAGMENTATION); at internucleosomal sites. This mode of cell death serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth.
An enzyme formed from PROTHROMBIN that converts FIBRINOGEN to FIBRIN.
Extracellular protease inhibitors that are secreted from FIBROBLASTS. They form a covalent complex with SERINE PROTEASES and can mediate their cellular internalization and degradation.
Cell lines whose original growing procedure consisted being transferred (T) every 3 days and plated at 300,000 cells per plate (J Cell Biol 17:299-313, 1963). Lines have been developed using several different strains of mice. Tissues are usually fibroblasts derived from mouse embryos but other types and sources have been developed as well. The 3T3 lines are valuable in vitro host systems for oncogenic virus transformation studies, since 3T3 cells possess a high sensitivity to CONTACT INHIBITION.
A family of serine endopeptidases found in the SECRETORY GRANULES of LEUKOCYTES such as CYTOTOXIC T-LYMPHOCYTES and NATURAL KILLER CELLS. When secreted into the intercellular space granzymes act to eliminate transformed and virus-infected host cells.
A family of serine-threonine kinases that bind to and are activated by MONOMERIC GTP-BINDING PROTEINS such as RAC GTP-BINDING PROTEINS and CDC42 GTP-BINDING PROTEIN. They are intracellular signaling kinases that play a role the regulation of cytoskeletal organization.
Elements of limited time intervals, contributing to particular results or situations.
The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION.
Peptides composed of between two and twelve amino acids.
Plasma glycoprotein member of the serpin superfamily which inhibits TRYPSIN; NEUTROPHIL ELASTASE; and other PROTEOLYTIC ENZYMES.
The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990)
CELL LINE derived from the ovary of the Chinese hamster, Cricetulus griseus (CRICETULUS). The species is a favorite for cytogenetic studies because of its small chromosome number. The cell line has provided model systems for the study of genetic alterations in cultured mammalian cells.
A superfamily of PROTEIN-SERINE-THREONINE KINASES that are activated by diverse stimuli via protein kinase cascades. They are the final components of the cascades, activated by phosphorylation by MITOGEN-ACTIVATED PROTEIN KINASE KINASES, which in turn are activated by mitogen-activated protein kinase kinase kinases (MAP KINASE KINASE KINASES).
Separation technique in which the stationary phase consists of ion exchange resins. The resins contain loosely held small ions that easily exchange places with other small ions of like charge present in solutions washed over the resins.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.
Compounds of the general formula R-O-R arranged in a ring or crown formation.
A subclass of enzymes of the transferase class that catalyze the transfer of an amino group from a donor (generally an amino acid) to an acceptor (generally a 2-keto acid). Most of these enzymes are pyridoxyl phosphate proteins. (Dorland, 28th ed) EC 2.6.1.
A structurally-related group of signaling proteins that are phosphorylated by the INSULIN RECEPTOR PROTEIN-TYROSINE KINASE. The proteins share in common an N-terminal PHOSPHOLIPID-binding domain, a phosphotyrosine-binding domain that interacts with the phosphorylated INSULIN RECEPTOR, and a C-terminal TYROSINE-rich domain. Upon tyrosine phosphorylation insulin receptor substrate proteins interact with specific SH2 DOMAIN-containing proteins that are involved in insulin receptor signaling.
An essential amino acid that is required for the production of HISTAMINE.
A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement.
Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.
An inhibitor of Serine Endopeptidases. Acts as alkylating agent and is known to interfere with the translation process.
A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.
A family of neutral serine proteases with CHYMOTRYPSIN-like activity. Chymases are primarily found in the SECRETORY GRANULES of MAST CELLS and are released during mast cell degranulation.
Proteins found in the PERIPLASM of organisms with cell walls.
Enzymes which catalyze the hydrolysis of carboxylic acid esters with the formation of an alcohol and a carboxylic acid anion.
Diffusible gene products that act on homologous or heterologous molecules of viral or cellular DNA to regulate the expression of proteins.
The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to alpha helices, beta strands (which align to form beta sheets) or other types of coils. This is the first folding level of protein conformation.
Reversibly catalyze the oxidation of a hydroxyl group of carbohydrates to form a keto sugar, aldehyde or lactone. Any acceptor except molecular oxygen is permitted. Includes EC 1.1.1.; EC 1.1.2.; and 1.1.99.
The chemical or biochemical addition of carbohydrate or glycosyl groups to other chemicals, especially peptides or proteins. Glycosyl transferases are used in this biochemical reaction.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
A 77-kDa subcomponent of complement C1, encoded by gene C1S, is a SERINE PROTEASE existing as a proenzyme (homodimer) in the intact complement C1 complex. Upon the binding of COMPLEMENT C1Q to antibodies, the activated COMPLEMENT C1R cleaves C1s into two chains, A (heavy) and B (light, the serine protease), linked by disulfide bonds yielding the active C1s. The activated C1s, in turn, cleaves COMPLEMENT C2 and COMPLEMENT C4 to form C4b2a (CLASSICAL C3 CONVERTASE).
The sequential correspondence of nucleotides in one nucleic acid molecule with those of another nucleic acid molecule. Sequence homology is an indication of the genetic relatedness of different organisms and gene function.
A product of the lysis of plasminogen (profibrinolysin) by PLASMINOGEN activators. It is composed of two polypeptide chains, light (B) and heavy (A), with a molecular weight of 75,000. It is the major proteolytic enzyme involved in blood clot retraction or the lysis of fibrin and quickly inactivated by antiplasmins.
A transferase that catalyzes the addition of aliphatic, aromatic, or heterocyclic FREE RADICALS as well as EPOXIDES and arene oxides to GLUTATHIONE. Addition takes place at the SULFUR. It also catalyzes the reduction of polyol nitrate by glutathione to polyol and nitrite.
Processes that stimulate the GENETIC TRANSCRIPTION of a gene or set of genes.
A cell line generated from human embryonic kidney cells that were transformed with human adenovirus type 5.
A phorbol ester found in CROTON OIL with very effective tumor promoting activity. It stimulates the synthesis of both DNA and RNA.
An oligopeptide produced by various bacteria which acts as a protease inhibitor.
An amino acid that occurs in endogenous proteins. Tyrosine phosphorylation and dephosphorylation plays a role in cellular signal transduction and possibly in cell growth control and carcinogenesis.
Proteins that control the CELL DIVISION CYCLE. This family of proteins includes a wide variety of classes, including CYCLIN-DEPENDENT KINASES, mitogen-activated kinases, CYCLINS, and PHOSPHOPROTEIN PHOSPHATASES as well as their putative substrates such as chromatin-associated proteins, CYTOSKELETAL PROTEINS, and TRANSCRIPTION FACTORS.
A protease nexin and serpin subtype that is specific for several SERINE PROTEASES including UROKINASE; THROMBIN; TRYPSIN; and PLASMINOGEN ACTIVATORS.
Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.
A sulfur-containing essential L-amino acid that is important in many body functions.
Phosphotransferases that catalyzes the conversion of 1-phosphatidylinositol to 1-phosphatidylinositol 3-phosphate. Many members of this enzyme class are involved in RECEPTOR MEDIATED SIGNAL TRANSDUCTION and regulation of vesicular transport with the cell. Phosphatidylinositol 3-Kinases have been classified both according to their substrate specificity and their mode of action within the cell.
An enzyme that catalyzes the biosynthesis of cysteine in microorganisms and plants from O-acetyl-L-serine and hydrogen sulfide. This enzyme was formerly listed as EC 4.2.99.8.
The relationship between the dose of an administered drug and the response of the organism to the drug.
Proteins and peptides that are involved in SIGNAL TRANSDUCTION within the cell. Included here are peptides and proteins that regulate the activity of TRANSCRIPTION FACTORS and cellular processes in response to signals from CELL SURFACE RECEPTORS. Intracellular signaling peptide and proteins may be part of an enzymatic signaling cascade or act through binding to and modifying the action of other signaling factors.
A chromatographic technique that utilizes the ability of biological molecules to bind to certain ligands specifically and reversibly. It is used in protein biochemistry. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
Use of restriction endonucleases to analyze and generate a physical map of genomes, genes, or other segments of DNA.
A 80-kDa subcomponent of complement C1, existing as a SERINE PROTEASE proenzyme in the intact complement C1 complex. When COMPLEMENT C1Q is bound to antibodies, the changed tertiary structure causes autolytic activation of complement C1r which is cleaved into two chains, A (heavy) and B (light, the serine protease), connected by disulfide bonds. The activated C1r serine protease, in turn, activates COMPLEMENT C1S proenzyme by cleaving the Arg426-Ile427 bond. No fragment is released when either C1r or C1s is cleaved.
An essential amino acid. It is often added to animal feed.
Intracellular fluid from the cytoplasm after removal of ORGANELLES and other insoluble cytoplasmic components.
Compounds based on 5,6,7,8-tetrahydrofolate.
Enzymes from the transferase class that catalyze the transfer of acyl groups from donor to acceptor, forming either esters or amides. (From Enzyme Nomenclature 1992) EC 2.3.
A G-protein-coupled, proteinase-activated receptor that is expressed in a variety of tissues including ENDOTHELIUM; LEUKOCYTES; and the GASTROINTESTINAL TRACT. The receptor is activated by TRYPSIN, which cleaves off the N-terminal peptide from the receptor. The new N-terminal peptide is a cryptic ligand for the receptor. The uncleaved receptor can also be activated by the N-terminal peptide present on the activated THROMBIN RECEPTOR and by small synthetic peptides that contain the unmasked N-terminal sequence.

Differential roles for cyclin-dependent kinase inhibitors p21 and p16 in the mechanisms of senescence and differentiation in human fibroblasts. (1/8537)

The irreversible G1 arrest in senescent human diploid fibroblasts is probably caused by inactivation of the G1 cyclin-cyclin-dependent kinase (Cdk) complexes responsible for phosphorylation of the retinoblastoma protein (pRb). We show that the Cdk inhibitor p21(Sdi1,Cip1,Waf1), which accumulates progressively in aging cells, binds to and inactivates all cyclin E-Cdk2 complexes in senescent cells, whereas in young cells only p21-free Cdk2 complexes are active. Furthermore, the senescent-cell-cycle arrest occurs prior to the accumulation of the Cdk4-Cdk6 inhibitor p16(Ink4a), suggesting that p21 may be sufficient for this event. Accordingly, cyclin D1-associated phosphorylation of pRb at Ser-780 is lacking even in newly senescent fibroblasts that have a low amount of p16. Instead, the cyclin D1-Cdk4 and cyclin D1-Cdk6 complexes in these cells are associated with an increased amount of p21, suggesting that p21 may be responsible for inactivation of both cyclin E- and cyclin D1-associated kinase activity at the early stage of senescence. Moreover, even in the late stage of senescence when p16 is high, cyclin D1-Cdk4 complexes are persistent, albeit reduced by +info)

An antiviral mechanism of nitric oxide: inhibition of a viral protease. (2/8537)

Although nitric oxide (NO) kills or inhibits the replication of a variety of intracellular pathogens, the antimicrobial mechanisms of NO are unknown. Here, we identify a viral protease as a target of NO. The life cycle of many viruses depends upon viral proteases that cleave viral polyproteins into individual polypeptides. NO inactivates the Coxsackievirus protease 3C, an enzyme necessary for the replication of Coxsackievirus. NO S-nitrosylates the cysteine residue in the active site of protease 3C, inhibiting protease activity and interrupting the viral life cycle. Substituting a serine residue for the active site cysteine renders protease 3C resistant to NO inhibition. Since cysteine proteases are critical for virulence or replication of many viruses, bacteria, and parasites, S-nitrosylation of pathogen cysteine proteases may be a general mechanism of antimicrobial host defenses.  (+info)

AMP-activated protein kinase phosphorylation of endothelial NO synthase. (3/8537)

The AMP-activated protein kinase (AMPK) in rat skeletal and cardiac muscle is activated by vigorous exercise and ischaemic stress. Under these conditions AMPK phosphorylates and inhibits acetyl-coenzyme A carboxylase causing increased oxidation of fatty acids. Here we show that AMPK co-immunoprecipitates with cardiac endothelial NO synthase (eNOS) and phosphorylates Ser-1177 in the presence of Ca2+-calmodulin (CaM) to activate eNOS both in vitro and during ischaemia in rat hearts. In the absence of Ca2+-calmodulin, AMPK also phosphorylates eNOS at Thr-495 in the CaM-binding sequence, resulting in inhibition of eNOS activity but Thr-495 phosphorylation is unchanged during ischaemia. Phosphorylation of eNOS by the AMPK in endothelial cells and myocytes provides a further regulatory link between metabolic stress and cardiovascular function.  (+info)

Cell adhesion regulates the interaction between the docking protein p130(Cas) and the 14-3-3 proteins. (4/8537)

Integrin ligand binding induces a signaling complex formation via the direct association of the docking protein p130(Cas) (Cas) with diverse molecules. We report here that the 14-3-3zeta protein interacts with Cas in the yeast two-hybrid assay. We also found that the two proteins associate in mammalian cells and that this interaction takes place in a phosphoserine-dependent manner, because treatment of Cas with a serine phosphatase greatly reduced its ability to bind 14-3-3zeta. Furthermore, the Cas-14-3-3zeta interaction was found to be regulated by integrin-mediated cell adhesion. Thus, when cells are detached from the extracellular matrix, the binding of Cas to 14-3-3zeta is greatly diminished, whereas replating the cells onto fibronectin rapidly induces the association. Consistent with these results, we found that the subcellular localization of Cas and 14-3-3 is also regulated by integrin ligand binding and that the two proteins display a significant co-localization during cell attachment to the extracellular matrix. In conclusion, our results demonstrate that 14-3-3 proteins participate in integrin-activated signaling pathways through their interaction with Cas, which, in turn, may contribute to important biological responses regulated by cell adhesion to the extracellular matrix.  (+info)

Haloanaerobacter salinarius sp. nov., a novel halophilic fermentative bacterium that reduces glycine-betaine to trimethylamine with hydrogen or serine as electron donors; emendation of the genus Haloanaerobacter. (5/8537)

A novel halophilic fermentative bacterium has been isolated from the black sediment below a gypsum crust and a microbial mat in hypersaline ponds of Mediterranean salterns. Morphologically, physiologically and genetically this organism belongs to the genus Haloanaerobacter. Haloanaerobacter strain SG 3903T (T = type strain) is composed of non-sporulating long flexible rods with peritrichous flagella, able to grow in the salinity range of 5-30% NaCl, with an optimum at 14-15%. The strain grows by fermenting carbohydrates or by using the Stickland reaction with either serine or H2 as electron donors and glycine-betaine as acceptor, which is reduced to trimethylamine. The two species described so far in the genus Haloanaerobacter are not capable of Stickland reaction with glycine-betaine + serine; however, Haloanaerobacter chitinovorans can use glycine-betaine with H2 as electron donor. Strain SG 3903T thus represents the first described strain in the genus Haloanaerobacter capable of the Stickland reaction with two amino acids. Although strain SG 3903T showed 67% DNA-DNA relatedness to H. chitinovorans, it is physiologically sufficiently different from the two described species to be considered as a new species which has been named Haloanaerobacter salinarius sp. nov.  (+info)

Transcription factor AP-2 activity is modulated by protein kinase A-mediated phosphorylation. (6/8537)

We recently reported that APOE promoter activity is stimulated by cAMP, this effect being mediated by factor AP-2 [Garcia et al. (1996) J. Neurosci. 16, 7550-7556]. Here, we study whether cAMP-induced phosphorylation modulates the activity of AP-2. Recombinant AP-2 was phosphorylated in vitro by protein kinase A (PKA) at Ser239. Mutation of Ser239 to Ala abolished in vitro phosphorylation of AP-2 by PKA, but not the DNA binding activity of AP-2. Cotransfection studies showed that PKA stimulated the effect of AP-2 on the APOE promoter, but not that of the S239A mutant. Therefore, cAMP may modulate AP-2 activity by PKA-induced phosphorylation of this factor.  (+info)

Structure-function studies of Ser-289 in the class C beta-lactamase from Enterobacter cloacae P99. (7/8537)

Site-directed mutagenesis of Ser-289 of the class C beta-lactamase from Enterobacter cloacae P99 was performed to investigate the role of this residue in beta-lactam hydrolysis. This amino acid lies near the active site of the enzyme, where it can interact with the C-3 substituent of cephalosporins. Kinetic analysis of six mutant beta-lactamases with five cephalosporins showed that Ser-289 can be substituted by amino acids with nonpolar or polar uncharged side chains without altering the catalytic efficiency of the enzyme. These data suggest that Ser-289 is not essential in the binding or hydrolytic mechanism of AmpC beta-lactamase. However, replacement by Lys or Arg decreased by two- to threefold the kcat of four of the five beta-lactams tested, particularly cefoperazone, cephaloridine, and cephalothin. Three-dimensional models of the mutant beta-lactamases revealed that the length and positive charge of the side chain of Lys and Arg could create an electrostatic linkage to the C-4 carboxylic acid group of the dihydrothiazine ring of the acyl intermediate which could slow the deacylation step or hinder release of the product.  (+info)

The nucleoprotein of Marburg virus is target for multiple cellular kinases. (8/8537)

The nucleoprotein (NP) of Marburg virus is phosphorylated at serine and threonine residues in a ratio of 85:15, regardless of whether the protein is isolated from virions or from eukaryotic expression systems. Phosphotyrosine is absent. Although many potential phosphorylation sites are located in the N-terminal half of NP, this part of the protein is not phosphorylated. Analyses of phosphorylation state and phosphoamino acid content of truncated NPs expressed in HeLa cells using the vaccinia virus T7 expression system led to the identification of seven phosphorylated regions (region I*, amino acids 404-432; II*, amino acids 446-472; III*, amino acids 484-511; IV*, amino acids 534-543; V*, amino acid 549; VI*, amino acids 599-604; and VII*, amino acid 619) with a minimum of seven phosphorylated amino acid residues located in the C-terminal half of NP. All phosphothreonine residues and consensus recognition sequences for protein kinase CKII are located in regions I*-V*. Regions VI* and VII* contain only phosphoserine with three of four serine residues in consensus recognition motifs for proline-directed protein kinases. Mutagenesis of proline-adjacent serine residues to alanine or aspartic acid did not influence the function of NP in a reconstituted transcription/replication system; thus it is concluded that serine phosphorylation in the most C-terminal part of NP is not a regulatory factor in viral RNA synthesis.  (+info)

Serine is an amino acid that is a building block of proteins. It is a non-essential amino acid, meaning that it can be synthesized by the body from other compounds. In the medical field, serine is known to play a role in various physiological processes, including the production of neurotransmitters, the regulation of blood sugar levels, and the maintenance of healthy skin and hair. It is also used as a dietary supplement to support these functions and to promote overall health. In some cases, serine may be prescribed by a healthcare provider to treat certain medical conditions, such as liver disease or depression.

Serine endopeptidases are a class of enzymes that cleave peptide bonds in proteins, specifically at the carboxyl side of serine residues. These enzymes are involved in a wide range of biological processes, including digestion, blood clotting, and immune response. In the medical field, serine endopeptidases are often studied for their potential therapeutic applications, such as in the treatment of cancer, inflammation, and neurological disorders. They are also used as research tools to study protein function and regulation. Some examples of serine endopeptidases include trypsin, chymotrypsin, and elastase.

Serine proteases are a class of enzymes that use serine as the nucleophile in their catalytic mechanism to hydrolyze peptide bonds. They are involved in a wide range of biological processes, including blood clotting, digestion, immune response, and cell signaling. In the medical field, serine proteases are important targets for the development of drugs to treat various diseases. For example, inhibitors of serine proteases are used to treat conditions such as bleeding disorders, thrombosis, and cancer. They are also being investigated as potential therapeutic agents for inflammatory and autoimmune diseases, as well as for the treatment of viral infections. In addition, serine proteases are involved in the pathogenesis of many diseases, and their activity is often dysregulated in these conditions. Therefore, understanding the role of serine proteases in disease is important for the development of new diagnostic and therapeutic strategies.

In the medical field, an amino acid sequence refers to the linear order of amino acids in a protein molecule. Proteins are made up of chains of amino acids, and the specific sequence of these amino acids determines the protein's structure and function. The amino acid sequence is determined by the genetic code, which is a set of rules that specifies how the sequence of nucleotides in DNA is translated into the sequence of amino acids in a protein. Each amino acid is represented by a three-letter code, and the sequence of these codes is the amino acid sequence of the protein. The amino acid sequence is important because it determines the protein's three-dimensional structure, which in turn determines its function. Small changes in the amino acid sequence can have significant effects on the protein's structure and function, and this can lead to diseases or disorders. For example, mutations in the amino acid sequence of a protein involved in blood clotting can lead to bleeding disorders.

Serine C-Palmitoyltransferase (SPT) is an enzyme that plays a crucial role in the biosynthesis of sphingolipids, which are important components of cell membranes and signaling molecules. SPT catalyzes the transfer of a palmitoyl group from coenzyme A to serine, resulting in the formation of 3-ketosphinganine, the first intermediate in the sphingolipid biosynthetic pathway. SPT is a heterodimeric enzyme composed of two subunits, LCB1 and LCB2, which are encoded by separate genes. The activity of SPT is regulated by various factors, including the availability of substrates, inhibitors, and activators. Defects in SPT activity can lead to a group of rare inherited disorders known as sphingolipidoses, which are characterized by the accumulation of abnormal sphingolipids in cells and tissues. These disorders can affect various organs and systems in the body, leading to a range of symptoms and complications, including neurological problems, skin abnormalities, and skeletal deformities.

Phosphoserine is a molecule that contains a phosphate group attached to a serine amino acid. It is a common post-translational modification of proteins, where the phosphate group is added to the serine residue by a kinase enzyme. This modification can affect the function and activity of the protein, and is involved in a variety of cellular processes, including signal transduction, gene expression, and protein-protein interactions. In the medical field, phosphoserine is often studied in the context of diseases such as cancer, where changes in protein phosphorylation patterns can contribute to disease progression.

Serine O-Acetyltransferase (also known as S-adenosylmethionine:serine O-acetyltransferase or ASMT) is an enzyme that plays a crucial role in the metabolism of the amino acid serine. It catalyzes the transfer of an acetyl group from acetyl-CoA to serine, forming O-acetylserine. This reaction is the first step in the biosynthesis of cysteine, an essential amino acid that is involved in a wide range of biological processes, including the formation of disulfide bonds in proteins, the detoxification of harmful substances, and the regulation of gene expression. In the medical field, ASMT is of particular interest because it is involved in the metabolism of several drugs, including the antipsychotic medication clozapine. ASMT activity is also associated with a number of neurological disorders, including schizophrenia, bipolar disorder, and depression. As a result, ASMT has been proposed as a potential therapeutic target for the treatment of these conditions.

Glycine hydroxymethyltransferase (GHMT) is an enzyme that plays a crucial role in the metabolism of glycine, a non-essential amino acid. It catalyzes the transfer of a hydroxymethyl group from glycine to tetrahydrofolate (THF), a coenzyme involved in the synthesis of nucleotides, amino acids, and other important biomolecules. In the medical field, GHMT deficiency is a rare genetic disorder that affects the metabolism of glycine. This deficiency can lead to a buildup of toxic levels of glycine in the body, which can cause a range of symptoms, including seizures, developmental delays, and intellectual disability. Treatment for GHMT deficiency typically involves dietary modifications and supplementation with THF and other cofactors involved in glycine metabolism.

Protein-Serine-Threonine Kinases (PSTKs) are a family of enzymes that play a crucial role in regulating various cellular processes, including cell growth, differentiation, metabolism, and apoptosis. These enzymes phosphorylate specific amino acids, such as serine and threonine, on target proteins, thereby altering their activity, stability, or localization within the cell. PSTKs are involved in a wide range of diseases, including cancer, diabetes, cardiovascular disease, and neurodegenerative disorders. Therefore, understanding the function and regulation of PSTKs is important for developing new therapeutic strategies for these diseases.

Threonine is an essential amino acid that plays a crucial role in various biological processes in the human body. It is a polar amino acid with a hydroxyl group (-OH) attached to the alpha carbon atom, which makes it hydrophilic and capable of forming hydrogen bonds. In the medical field, threonine is important for several reasons. Firstly, it is a building block of proteins, which are essential for the structure and function of cells and tissues in the body. Secondly, threonine is involved in the metabolism of carbohydrates and lipids, which are important sources of energy for the body. Thirdly, threonine is a precursor for the synthesis of several important molecules, including carnitine, which plays a role in the metabolism of fatty acids. Threonine deficiency can lead to a range of health problems, including muscle wasting, impaired growth and development, and weakened immune function. It is therefore important to ensure that the body receives adequate amounts of threonine through a balanced diet or supplements.

In the medical field, a base sequence refers to the specific order of nucleotides (adenine, thymine, cytosine, and guanine) that make up the genetic material (DNA or RNA) of an organism. The base sequence determines the genetic information encoded within the DNA molecule and ultimately determines the traits and characteristics of an individual. The base sequence can be analyzed using various techniques, such as DNA sequencing, to identify genetic variations or mutations that may be associated with certain diseases or conditions.

In the medical field, binding sites refer to specific locations on the surface of a protein molecule where a ligand (a molecule that binds to the protein) can attach. These binding sites are often formed by a specific arrangement of amino acids within the protein, and they are critical for the protein's function. Binding sites can be found on a wide range of proteins, including enzymes, receptors, and transporters. When a ligand binds to a protein's binding site, it can cause a conformational change in the protein, which can alter its activity or function. For example, a hormone may bind to a receptor protein, triggering a signaling cascade that leads to a specific cellular response. Understanding the structure and function of binding sites is important in many areas of medicine, including drug discovery and development, as well as the study of diseases caused by mutations in proteins that affect their binding sites. By targeting specific binding sites on proteins, researchers can develop drugs that modulate protein activity and potentially treat a wide range of diseases.

In the medical field, a cell line refers to a group of cells that have been derived from a single parent cell and have the ability to divide and grow indefinitely in culture. These cells are typically grown in a laboratory setting and are used for research purposes, such as studying the effects of drugs or investigating the underlying mechanisms of diseases. Cell lines are often derived from cancerous cells, as these cells tend to divide and grow more rapidly than normal cells. However, they can also be derived from normal cells, such as fibroblasts or epithelial cells. Cell lines are characterized by their unique genetic makeup, which can be used to identify them and compare them to other cell lines. Because cell lines can be grown in large quantities and are relatively easy to maintain, they are a valuable tool in medical research. They allow researchers to study the effects of drugs and other treatments on specific cell types, and to investigate the underlying mechanisms of diseases at the cellular level.

Recombinant proteins are proteins that are produced by genetically engineering bacteria, yeast, or other organisms to express a specific gene. These proteins are typically used in medical research and drug development because they can be produced in large quantities and are often more pure and consistent than proteins that are extracted from natural sources. Recombinant proteins can be used for a variety of purposes in medicine, including as diagnostic tools, therapeutic agents, and research tools. For example, recombinant versions of human proteins such as insulin, growth hormones, and clotting factors are used to treat a variety of medical conditions. Recombinant proteins can also be used to study the function of specific genes and proteins, which can help researchers understand the underlying causes of diseases and develop new treatments.

Mannose-binding protein-associated serine proteases (MASPs) are a family of proteases that are involved in the complement system, a part of the immune system that helps to protect the body against infections. These proteases are activated by mannose-binding protein (MBP), a protein that is produced by the liver and circulates in the blood.(MBP),。

Serpins are a family of proteins that play important roles in regulating a variety of physiological processes in the body. They are named after their ability to inhibit serine proteases, a class of enzymes that cleave proteins at specific sites using serine as a nucleophile. Serpins are found in many different tissues and fluids throughout the body, and they have a wide range of functions. Some serpins act as inhibitors of proteases involved in blood clotting, inflammation, and immune responses, while others play roles in the metabolism of hormones and other signaling molecules. In the medical field, serpins are of particular interest because of their potential therapeutic applications. For example, some serpins have been shown to have anti-inflammatory and anti-cancer effects, and they are being studied as potential treatments for a variety of diseases, including cardiovascular disease, cancer, and neurodegenerative disorders. Additionally, some serpins are used as diagnostic markers for certain conditions, such as liver disease and certain types of cancer.

Cloning, molecular, in the medical field refers to the process of creating identical copies of a specific DNA sequence or gene. This is achieved through a technique called polymerase chain reaction (PCR), which amplifies a specific DNA sequence to produce multiple copies of it. Molecular cloning is commonly used in medical research to study the function of specific genes, to create genetically modified organisms for therapeutic purposes, and to develop new drugs and treatments. It is also used in forensic science to identify individuals based on their DNA. In the context of human cloning, molecular cloning is used to create identical copies of a specific gene or DNA sequence from one individual and insert it into the genome of another individual. This technique has been used to create transgenic animals, but human cloning is currently illegal in many countries due to ethical concerns.

Protein kinases are enzymes that catalyze the transfer of a phosphate group from ATP (adenosine triphosphate) to specific amino acid residues on proteins. This process, known as phosphorylation, can alter the activity, localization, or stability of the target protein, and is a key mechanism for regulating many cellular processes, including cell growth, differentiation, metabolism, and signaling pathways. Protein kinases are classified into different families based on their sequence, structure, and substrate specificity. Some of the major families of protein kinases include serine/threonine kinases, tyrosine kinases, and dual-specificity kinases. Each family has its own unique functions and roles in cellular signaling. In the medical field, protein kinases are important targets for the development of drugs for the treatment of various diseases, including cancer, diabetes, and cardiovascular disease. Many cancer drugs target specific protein kinases that are overactive in cancer cells, while drugs for diabetes and cardiovascular disease often target kinases involved in glucose metabolism and blood vessel function, respectively.

Amino acids are organic compounds that are the building blocks of proteins. They are composed of an amino group (-NH2), a carboxyl group (-COOH), and a side chain (R group) that varies in size and structure. There are 20 different amino acids that are commonly found in proteins, each with a unique side chain that gives it distinct chemical and physical properties. In the medical field, amino acids are important for a variety of functions, including the synthesis of proteins, enzymes, and hormones. They are also involved in energy metabolism and the maintenance of healthy tissues. Deficiencies in certain amino acids can lead to a range of health problems, including muscle wasting, anemia, and neurological disorders. In some cases, amino acids may be prescribed as supplements to help treat these conditions or to support overall health and wellness.

L-Serine Dehydratase is an enzyme that plays a crucial role in the metabolism of the amino acid L-serine. It is responsible for converting L-serine into pyruvate and ammonia. This enzyme is found in various tissues throughout the body, including the liver, kidney, and brain. In the medical field, L-Serine Dehydratase is often studied in the context of various diseases and disorders. For example, mutations in the gene that encodes this enzyme have been linked to a rare inherited disorder called L-serine dehydratase deficiency, which can cause a range of symptoms including developmental delays, seizures, and intellectual disability. In addition, L-Serine Dehydratase has been proposed as a potential therapeutic target for a number of conditions, including cancer, neurodegenerative diseases, and infectious diseases. This is because the enzyme is involved in various metabolic pathways that are important for the growth and survival of cells, and disrupting these pathways may be a way to inhibit the growth of cancer cells or slow the progression of neurodegenerative diseases.

Isoflurophate is a chemical compound that is used as an herbicide. It is not typically used in the medical field.

Phosphoprotein phosphatases are enzymes that remove phosphate groups from phosphoproteins, which are proteins that have been modified by the addition of a phosphate group. These enzymes play a crucial role in regulating cellular signaling pathways by modulating the activity of phosphoproteins. There are several types of phosphoprotein phosphatases, including protein tyrosine phosphatases (PTPs), protein serine/threonine phosphatases (S/T phosphatases), and phosphatases that can dephosphorylate both tyrosine and serine/threonine residues. Phosphoprotein phosphatases are involved in a wide range of cellular processes, including cell growth and division, metabolism, and immune response. Dysregulation of phosphoprotein phosphatase activity has been implicated in various diseases, including cancer, diabetes, and neurodegenerative disorders.

Phenylmethylsulfonyl fluoride (PMSF) is a chemical compound that is commonly used as a protease inhibitor in the medical field. Proteases are enzymes that break down proteins, and PMSF works by irreversibly inhibiting the activity of these enzymes. PMSF is often used in research to study the function of specific proteins, as well as to prevent the degradation of proteins during sample preparation. It is also used in some medical treatments, such as in the management of certain types of cancer. In the medical field, PMSF is typically administered as a solution or a powder that is dissolved in a solvent such as water or buffer. It is important to handle PMSF with care, as it is a strong acid and can cause skin irritation or burns if it comes into contact with skin.

Trypsin is a proteolytic enzyme that is produced by the pancreas and is responsible for breaking down proteins into smaller peptides and amino acids. It is a serine protease that cleaves peptide bonds on the carboxyl side of lysine and arginine residues. Trypsin is an important digestive enzyme that helps to break down dietary proteins into smaller peptides and amino acids that can be absorbed and used by the body. It is also used in medical research and in the development of diagnostic tests and therapeutic agents.

Cathepsin G is a protease enzyme that is produced by various immune cells, including neutrophils and macrophages. It is a member of the cysteine protease family and plays a role in the degradation of extracellular matrix proteins, as well as the activation of other immune cells. In the context of the immune response, cathepsin G is involved in the destruction of invading pathogens, such as bacteria and viruses. It is also involved in the process of inflammation, where it helps to break down tissue barriers and facilitate the migration of immune cells to the site of infection or injury. Cathepsin G has been implicated in a number of diseases, including inflammatory bowel disease, rheumatoid arthritis, and certain types of cancer. It is also being studied as a potential therapeutic target for the treatment of these conditions.

Amino acid substitution is a genetic mutation that occurs when one amino acid is replaced by another in a protein. This can happen due to a change in the DNA sequence that codes for the protein. Amino acid substitutions can have a variety of effects on the function of the protein, depending on the specific amino acid that is replaced and the location of the substitution within the protein. In some cases, amino acid substitutions can lead to the production of a non-functional protein, which can result in a genetic disorder. In other cases, amino acid substitutions may have little or no effect on the function of the protein.

Glycine is an amino acid that is essential for the proper functioning of the human body. It is a non-essential amino acid, meaning that the body can synthesize it from other compounds, but it is still important for various physiological processes. In the medical field, glycine is used as a dietary supplement to support muscle growth and recovery, as well as to improve sleep quality. It is also used in the treatment of certain medical conditions, such as liver disease, as it can help to reduce the buildup of toxins in the liver. Glycine is also used in the production of various medications, including antibiotics and tranquilizers. It has been shown to have a calming effect on the nervous system and may be used to treat anxiety and other mental health conditions. Overall, glycine is an important nutrient that plays a vital role in many physiological processes in the body.

Endopeptidases are enzymes that cleave peptide bonds within polypeptide chains, typically within the interior of the molecule. They are a type of protease, which are enzymes that break down proteins into smaller peptides or individual amino acids. Endopeptidases are involved in a variety of physiological processes, including the regulation of hormone levels, the breakdown of blood clots, and the maintenance of tissue homeostasis. They are also important in the immune response, where they help to degrade and remove damaged or infected cells. In the medical field, endopeptidases are often used as research tools to study protein function and as potential therapeutic agents for a variety of diseases, including cancer, neurodegenerative disorders, and inflammatory conditions.

Cysteine is an amino acid that is essential for the proper functioning of the human body. It is a sulfur-containing amino acid that is involved in the formation of disulfide bonds, which are important for the structure and function of many proteins. Cysteine is also involved in the detoxification of harmful substances in the body, and it plays a role in the production of glutathione, a powerful antioxidant. In the medical field, cysteine is used to treat a variety of conditions, including respiratory infections, kidney stones, and cataracts. It is also used as a dietary supplement to support overall health and wellness.

Racemases and epimerases are enzymes that catalyze the interconversion of stereoisomers in biological systems. They are involved in the biosynthesis and degradation of many important molecules, including amino acids, sugars, and lipids. Racemases are enzymes that catalyze the racemization of chiral centers, converting a molecule from one enantiomer to its mirror image. This process is important in the biosynthesis of many amino acids, which are chiral molecules that are essential for the structure and function of proteins. Epimerases, on the other hand, are enzymes that catalyze the interconversion of epimers, which are stereoisomers that differ in configuration at a single chiral center. This process is important in the biosynthesis and degradation of many sugars and other chiral molecules. Both racemases and epimerases play important roles in the metabolism of living organisms, and their activity is often regulated by various factors, including the availability of substrates and the presence of inhibitors. In the medical field, racemases and epimerases are the targets of several drugs, including antibiotics and antiviral agents, and they are also being studied as potential therapeutic targets for a variety of diseases.

Phosphothreonine is a type of protein modification in which a phosphate group is added to the threonine amino acid residue in a protein. This modification is catalyzed by enzymes called protein kinases, which transfer a phosphate group from ATP (adenosine triphosphate) to the threonine residue. Phosphorylation of threonine residues can regulate the activity of proteins, including enzymes, receptors, and transcription factors, by altering their conformation or interactions with other molecules. Phosphothreonine is an important signaling molecule in many cellular processes, including cell growth, differentiation, and metabolism. Abnormal phosphorylation of threonine residues has been implicated in various diseases, including cancer, diabetes, and neurodegenerative disorders.

Chymotrypsin is a digestive enzyme that is produced by the pancreas and secreted into the small intestine. It is a protease enzyme that breaks down proteins into smaller peptides and amino acids. Chymotrypsin is particularly effective at breaking down proteins that contain aromatic amino acids such as tryptophan, tyrosine, and phenylalanine. In the medical field, chymotrypsin is used to treat a variety of conditions, including: 1. Pancreatitis: Chymotrypsin is used to help break down the excess enzymes in the pancreas that can cause inflammation and damage to the pancreas. 2. Gallstones: Chymotrypsin is used to dissolve gallstones that are composed of cholesterol. 3. Inflammatory bowel disease: Chymotrypsin is used to help reduce inflammation in the digestive tract. 4. Cancer: Chymotrypsin is being studied as a potential treatment for certain types of cancer, including breast cancer and prostate cancer. Chymotrypsin is usually administered as a medication in the form of a tablet or injection. It is important to note that chymotrypsin can have side effects, including nausea, vomiting, and diarrhea, and should only be used under the guidance of a healthcare professional.

Phosphoglycerate dehydrogenase (PGDH) is an enzyme that plays a crucial role in the glycolytic pathway, which is the process by which cells convert glucose into energy. Specifically, PGDH catalyzes the conversion of 3-phosphoglycerate (3-PG) to 2-phosphoglycerate (2-PG) in the presence of NAD+ and NADP+. PGDH is a key regulatory enzyme in the glycolytic pathway, as it is inhibited by high levels of ATP, which signals that the cell has sufficient energy. This inhibition helps to prevent the wasteful production of energy when it is not needed. In the medical field, PGDH is of interest because it is involved in several diseases, including cancer, diabetes, and neurodegenerative disorders. For example, some studies have suggested that high levels of PGDH may be associated with an increased risk of certain types of cancer, such as breast and ovarian cancer. Additionally, PGDH has been implicated in the development of insulin resistance and type 2 diabetes, as well as in the progression of neurodegenerative diseases such as Alzheimer's and Parkinson's disease.

Phosphopeptides are short chains of amino acids that contain a phosphate group attached to one or more of their amino acid residues. In the medical field, phosphopeptides are often studied because they play important roles in various biological processes, including cell signaling, energy metabolism, and gene expression. Phosphopeptides can be found in many different types of molecules, including proteins, nucleic acids, and lipids. They are often used as markers for various diseases, such as cancer, and as targets for drug development. In addition, phosphopeptides are important components of the extracellular matrix, which is a network of proteins and carbohydrates that surrounds cells and provides structural support. Phosphopeptides can be detected and analyzed using a variety of techniques, including mass spectrometry, chromatography, and immunoassays. These methods allow researchers to study the structure, function, and regulation of phosphopeptides in various biological systems.

Alanine is an amino acid that is a building block of proteins. It is an essential amino acid, meaning that it cannot be synthesized by the body and must be obtained through the diet. Alanine plays a number of important roles in the body, including: 1. Energy production: Alanine can be converted into glucose, which is a source of energy for the body. 2. Muscle function: Alanine is involved in the metabolism of muscle tissue and can help to prevent muscle damage. 3. Liver function: Alanine is an important component of the liver's detoxification process and can help to protect the liver from damage. 4. Acid-base balance: Alanine helps to regulate the body's acid-base balance by buffering excess acid in the blood. In the medical field, alanine is often used as a biomarker to assess liver function. Elevated levels of alanine in the blood can indicate liver damage or disease. Alanine is also used as a dietary supplement to support muscle growth and recovery.

Phosphoproteins are proteins that have been modified by the addition of a phosphate group to one or more of their amino acid residues. This modification is known as phosphorylation, and it is a common post-translational modification that plays a critical role in regulating many cellular processes, including signal transduction, metabolism, and gene expression. Phosphoproteins are involved in a wide range of biological functions, including cell growth and division, cell migration and differentiation, and the regulation of gene expression. They are also involved in many diseases, including cancer, diabetes, and cardiovascular disease. Phosphoproteins can be detected and studied using a variety of techniques, including mass spectrometry, Western blotting, and immunoprecipitation. These techniques allow researchers to identify and quantify the phosphorylation status of specific proteins in cells and tissues, and to study the effects of changes in phosphorylation on protein function and cellular processes.

In the medical field, "Cells, Cultured" refers to cells that have been grown and maintained in a controlled environment outside of their natural biological context, typically in a laboratory setting. This process is known as cell culture and involves the isolation of cells from a tissue or organism, followed by their growth and proliferation in a nutrient-rich medium. Cultured cells can be derived from a variety of sources, including human or animal tissues, and can be used for a wide range of applications in medicine and research. For example, cultured cells can be used to study the behavior and function of specific cell types, to develop new drugs and therapies, and to test the safety and efficacy of medical products. Cultured cells can be grown in various types of containers, such as flasks or Petri dishes, and can be maintained at different temperatures and humidity levels to optimize their growth and survival. The medium used to culture cells typically contains a combination of nutrients, growth factors, and other substances that support cell growth and proliferation. Overall, the use of cultured cells has revolutionized medical research and has led to many important discoveries and advancements in the field of medicine.

Phosphoamino acids are amino acids that have a phosphate group attached to them. They are important components of many biological molecules, including proteins, nucleic acids, and lipids. In proteins, phosphoamino acids can be found in the form of phosphoproteins, which are proteins that have been modified by the addition of a phosphate group. Phosphoproteins play important roles in many cellular processes, including signal transduction, metabolism, and gene expression. In nucleic acids, phosphoamino acids are found in the form of phosphodiester bonds, which link the nucleotides together to form DNA and RNA. In lipids, phosphoamino acids are found in the form of phospholipids, which are important components of cell membranes.

Okadaic acid is a potent marine toxin produced by certain species of dinoflagellates, which are microscopic algae found in marine environments. It is a member of a group of toxins called polyether lipids, which are also known as diarrhetic shellfish poisoning (DSP) toxins. In the medical field, okadaic acid is primarily associated with seafood poisoning, which can occur when contaminated shellfish are consumed. The symptoms of okadaic acid poisoning can include nausea, vomiting, diarrhea, abdominal pain, and fever. In severe cases, it can lead to liver damage, kidney failure, and even death. Okadaic acid is also being studied for its potential therapeutic uses. Some research has suggested that it may have anti-cancer properties and may be useful in the treatment of certain types of cancer. However, more research is needed to confirm these findings and to determine the safety and efficacy of okadaic acid as a cancer treatment.

Protein Phosphatase 2 (PP2) is a family of serine/threonine phosphatases that play a crucial role in regulating various cellular processes, including cell growth, differentiation, and apoptosis. PP2 is involved in the regulation of many signaling pathways, including the mitogen-activated protein kinase (MAPK) pathway, the phosphoinositide 3-kinase (PI3K) pathway, and the Wnt signaling pathway. PP2 is composed of several subunits, including regulatory subunits and catalytic subunits. The regulatory subunits control the activity of the catalytic subunits by binding to them and modulating their activity. The catalytic subunits, on the other hand, are responsible for dephosphorylating target proteins. PP2 has been implicated in several diseases, including cancer, neurodegenerative disorders, and cardiovascular diseases. Dysregulation of PP2 activity has been shown to contribute to the development and progression of these diseases. Therefore, understanding the function and regulation of PP2 is important for the development of new therapeutic strategies for these diseases.

In the medical field, a catalytic domain is a region of a protein that is responsible for catalyzing a specific chemical reaction. Catalytic domains are often found in enzymes, which are proteins that speed up chemical reactions in the body. These domains are typically composed of a specific sequence of amino acids that form a three-dimensional structure that allows them to bind to specific substrates and catalyze their breakdown or synthesis. Catalytic domains are important for many biological processes, including metabolism, signal transduction, and gene expression. They are also the target of many drugs, which can be designed to interfere with the activity of specific catalytic domains in order to treat diseases.

In the medical field, "DNA, Complementary" refers to the property of DNA molecules to pair up with each other in a specific way. Each strand of DNA has a unique sequence of nucleotides (adenine, thymine, guanine, and cytosine), and the nucleotides on one strand can only pair up with specific nucleotides on the other strand in a complementary manner. For example, adenine (A) always pairs up with thymine (T), and guanine (G) always pairs up with cytosine (C). This complementary pairing is essential for DNA replication and transcription, as it ensures that the genetic information encoded in one strand of DNA can be accurately copied onto a new strand. The complementary nature of DNA also plays a crucial role in genetic engineering and biotechnology, as scientists can use complementary DNA strands to create specific genetic sequences or modify existing ones.

In the medical field, a peptide fragment refers to a short chain of amino acids that are derived from a larger peptide or protein molecule. Peptide fragments can be generated through various techniques, such as enzymatic digestion or chemical cleavage, and are often used in diagnostic and therapeutic applications. Peptide fragments can be used as biomarkers for various diseases, as they may be present in the body at elevated levels in response to specific conditions. For example, certain peptide fragments have been identified as potential biomarkers for cancer, neurodegenerative diseases, and cardiovascular disease. In addition, peptide fragments can be used as therapeutic agents themselves. For example, some peptide fragments have been shown to have anti-inflammatory or anti-cancer properties, and are being investigated as potential treatments for various diseases. Overall, peptide fragments play an important role in the medical field, both as diagnostic tools and as potential therapeutic agents.

Recombinant fusion proteins are proteins that are produced by combining two or more genes in a single molecule. These proteins are typically created using genetic engineering techniques, such as recombinant DNA technology, to insert one or more genes into a host organism, such as bacteria or yeast, which then produces the fusion protein. Fusion proteins are often used in medical research and drug development because they can have unique properties that are not present in the individual proteins that make up the fusion. For example, a fusion protein might be designed to have increased stability, improved solubility, or enhanced targeting to specific cells or tissues. Recombinant fusion proteins have a wide range of applications in medicine, including as therapeutic agents, diagnostic tools, and research reagents. Some examples of recombinant fusion proteins used in medicine include antibodies, growth factors, and cytokines.

Casein kinase II (CKII) is a serine/threonine protein kinase that plays a crucial role in various cellular processes, including cell cycle regulation, gene expression, and signal transduction. It is composed of two catalytic subunits (α and β) and two regulatory subunits (α' and β') that form a tetrameric structure. In the medical field, CKII has been implicated in various diseases, including cancer, neurodegenerative disorders, and cardiovascular diseases. For example, CKII has been shown to be overexpressed in many types of cancer, and its inhibition has been proposed as a potential therapeutic strategy for cancer treatment. Additionally, CKII has been implicated in the pathogenesis of Alzheimer's disease, Parkinson's disease, and Huntington's disease, as well as in the development of cardiovascular diseases such as atherosclerosis and hypertension. Overall, CKII is a highly conserved and ubiquitous protein kinase that plays a critical role in various cellular processes and is involved in the pathogenesis of several diseases.

In the medical field, "COS Cells" typically refers to "cumulus-oocyte complexes." These are clusters of cells that are found in the ovaries of women and are involved in the process of ovulation and fertilization. The cumulus cells are a type of supporting cells that surround the oocyte (egg cell) and help to nourish and protect it. The oocyte is the female reproductive cell that is produced in the ovaries and is capable of being fertilized by a sperm cell to form a zygote, which can develop into a fetus. During the menstrual cycle, the ovaries produce several follicles, each containing an oocyte and surrounding cumulus cells. One follicle will mature and release its oocyte during ovulation, which is triggered by a surge in luteinizing hormone (LH). The released oocyte then travels down the fallopian tube, where it may be fertilized by a sperm cell. COS cells are often used in assisted reproductive technologies (ART), such as in vitro fertilization (IVF), to help facilitate the growth and development of oocytes for use in fertility treatments.

Subtilisins are a family of serine proteases that are produced by the bacterium Bacillus subtilis. They are commonly used as industrial enzymes in the food and pharmaceutical industries, as well as in research applications. In the medical field, subtilisins have been studied for their potential therapeutic applications, including as antimicrobial agents, anti-tumor agents, and as tools for tissue engineering and regenerative medicine. They have also been used in the development of diagnostic tests for various diseases.

In the medical field, catalysis refers to the acceleration of a chemical reaction by a catalyst. A catalyst is a substance that increases the rate of a chemical reaction without being consumed or altered in the process. Catalysts are commonly used in medical research and drug development to speed up the synthesis of compounds or to optimize the efficiency of chemical reactions. For example, enzymes are biological catalysts that play a crucial role in many metabolic processes in the body. In medical research, enzymes are often used as catalysts to speed up the synthesis of drugs or to optimize the efficiency of chemical reactions involved in drug metabolism. Catalysis is also used in medical imaging techniques, such as magnetic resonance imaging (MRI), where contrast agents are used to enhance the visibility of certain tissues or organs. These contrast agents are often synthesized using catalytic reactions to increase their efficiency and effectiveness. Overall, catalysis plays a critical role in many areas of medical research and drug development, helping to accelerate the synthesis of compounds and optimize the efficiency of chemical reactions.

Protein kinase C (PKC) is a family of enzymes that play a crucial role in various cellular processes, including cell growth, differentiation, and apoptosis. In the medical field, PKC is often studied in relation to its involvement in various diseases, including cancer, cardiovascular disease, and neurodegenerative disorders. PKC enzymes are activated by the binding of diacylglycerol (DAG) and calcium ions, which leads to the phosphorylation of target proteins. This phosphorylation can alter the activity, localization, or stability of the target proteins, leading to changes in cellular signaling pathways. PKC enzymes are divided into several subfamilies based on their structure and activation mechanisms. The different subfamilies have distinct roles in cellular signaling and are involved in different diseases. For example, some PKC subfamilies are associated with cancer progression, while others are involved in the regulation of the immune system. Overall, PKC enzymes are an important area of research in the medical field, as they have the potential to be targeted for the development of new therapeutic strategies for various diseases.

Blotting, Western is a laboratory technique used to detect specific proteins in a sample by transferring proteins from a gel to a membrane and then incubating the membrane with a specific antibody that binds to the protein of interest. The antibody is then detected using an enzyme or fluorescent label, which produces a visible signal that can be quantified. This technique is commonly used in molecular biology and biochemistry to study protein expression, localization, and function. It is also used in medical research to diagnose diseases and monitor treatment responses.

Tyrosine is an amino acid that is essential for the production of certain hormones, neurotransmitters, and other important molecules in the body. It is a non-essential amino acid, which means that it can be synthesized by the body from other amino acids or from dietary sources. In the medical field, tyrosine is often used as a dietary supplement to support the production of certain hormones and neurotransmitters, particularly dopamine and norepinephrine. These hormones play important roles in regulating mood, motivation, and other aspects of brain function. Tyrosine is also used in the treatment of certain medical conditions, such as phenylketonuria (PKU), a genetic disorder that affects the metabolism of phenylalanine, another amino acid. In PKU, tyrosine supplementation can help to prevent the buildup of toxic levels of phenylalanine in the body. In addition, tyrosine has been studied for its potential benefits in the treatment of other conditions, such as depression, anxiety, and fatigue. However, more research is needed to confirm these potential benefits and to determine the optimal dosage and duration of tyrosine supplementation.

Peptide hydrolases are a class of enzymes that catalyze the hydrolysis of peptide bonds, which are the covalent bonds that link amino acids together to form peptides and proteins. These enzymes are involved in a wide range of biological processes, including digestion, immune response, and hormone regulation. There are several subclasses of peptide hydrolases, including proteases, peptidases, and endopeptidases. Proteases are enzymes that break down proteins into smaller peptides, while peptidases break down peptides into individual amino acids. Endopeptidases cleave peptide bonds within the peptide chain, while exopeptidases cleave peptide bonds at the ends of the chain. Peptide hydrolases are important in the medical field because they are involved in many diseases and conditions. For example, certain proteases are involved in the development of cancer, and inhibitors of these enzymes are being developed as potential cancer treatments. Peptide hydrolases are also involved in the immune response, and defects in these enzymes can lead to immune disorders. Additionally, peptide hydrolases are involved in the regulation of hormones, and imbalances in these enzymes can lead to hormonal disorders.

Pancreatic elastase is a digestive enzyme that is produced by the pancreas and is responsible for breaking down proteins in the small intestine. It is a serine protease that cleaves peptide bonds in proteins, particularly those that contain the amino acids arginine and lysine. Pancreatic elastase is secreted by the pancreas into the small intestine, where it helps to break down dietary proteins into smaller peptides and amino acids that can be absorbed by the body. It also plays a role in the breakdown of certain hormones and other proteins in the body. Abnormalities in the production or function of pancreatic elastase can lead to a variety of digestive disorders, including chronic pancreatitis, cystic fibrosis, and certain types of cancer. In these conditions, the pancreas may not produce enough elastase, or the enzyme may not function properly, leading to malabsorption of nutrients and other digestive problems.

Subtilisin is a type of protease enzyme that is produced by the bacterium Bacillus subtilis. It is commonly used in the medical field as a digestive aid to break down proteins in the digestive system. Subtilisin has also been studied for its potential use in treating certain medical conditions, such as cancer and inflammatory diseases. In addition, subtilisin has been used in the development of new drugs and as a tool for studying protein function.

Leukocyte Elastase is an enzyme that is produced by certain types of white blood cells, specifically neutrophils. It is a protease that plays a role in the immune response by breaking down and digesting proteins, including elastin, a protein found in connective tissue. In the context of the medical field, Leukocyte Elastase is often measured in the blood or sputum of patients with certain lung diseases, such as chronic obstructive pulmonary disease (COPD) or cystic fibrosis. Elevated levels of Leukocyte Elastase in the blood or sputum can indicate inflammation and tissue damage in the lungs, which can be a sign of these conditions. Leukocyte Elastase is also being studied as a potential biomarker for other diseases, such as cancer and cardiovascular disease.

DNA primers are short, single-stranded DNA molecules that are used in a variety of molecular biology techniques, including polymerase chain reaction (PCR) and DNA sequencing. They are designed to bind to specific regions of a DNA molecule, and are used to initiate the synthesis of new DNA strands. In PCR, DNA primers are used to amplify specific regions of DNA by providing a starting point for the polymerase enzyme to begin synthesizing new DNA strands. The primers are complementary to the target DNA sequence, and are added to the reaction mixture along with the DNA template, nucleotides, and polymerase enzyme. The polymerase enzyme uses the primers as a template to synthesize new DNA strands, which are then extended by the addition of more nucleotides. This process is repeated multiple times, resulting in the amplification of the target DNA sequence. DNA primers are also used in DNA sequencing to identify the order of nucleotides in a DNA molecule. In this application, the primers are designed to bind to specific regions of the DNA molecule, and are used to initiate the synthesis of short DNA fragments. The fragments are then sequenced using a variety of techniques, such as Sanger sequencing or next-generation sequencing. Overall, DNA primers are an important tool in molecular biology, and are used in a wide range of applications to study and manipulate DNA.

Kallikreins are a family of proteases (enzymes that break down proteins) that play important roles in the regulation of blood pressure, inflammation, and coagulation. They are produced in various tissues throughout the body, including the kidneys, lungs, and pancreas, and are activated by a variety of stimuli, such as tissue injury, stress, and hormonal changes. One of the main functions of kallikreins is to convert inactive precursor molecules called kinins into active kinins, which are hormones that cause vasodilation (widening of blood vessels) and increased blood flow. This helps to lower blood pressure and improve blood flow to tissues. Kallikreins also play a role in the inflammatory response by activating other enzymes and proteins that contribute to inflammation. They are also involved in the coagulation cascade, which is the series of reactions that ultimately leads to the formation of a blood clot. Abnormal levels of kallikreins or defects in their regulation have been implicated in a number of medical conditions, including hypertension (high blood pressure), heart disease, and certain types of cancer.

In the medical field, peptides are short chains of amino acids that are linked together by peptide bonds. They are typically composed of 2-50 amino acids and can be found in a variety of biological molecules, including hormones, neurotransmitters, and enzymes. Peptides play important roles in many physiological processes, including growth and development, immune function, and metabolism. They can also be used as therapeutic agents to treat a variety of medical conditions, such as diabetes, cancer, and cardiovascular disease. In the pharmaceutical industry, peptides are often synthesized using chemical methods and are used as drugs or as components of drugs. They can be administered orally, intravenously, or topically, depending on the specific peptide and the condition being treated.

Enzyme precursors are the inactive forms of enzymes that are synthesized in the body and need to be activated before they can perform their specific functions. Enzymes are proteins that catalyze chemical reactions in the body, and they play a crucial role in various physiological processes such as digestion, metabolism, and energy production. Enzyme precursors are usually synthesized in the liver and other organs and are transported to the cells where they are needed. Once inside the cells, they are activated by a process called proteolysis, which involves the cleavage of specific amino acid bonds in the enzyme precursor molecule. Enzyme precursors are important for maintaining proper enzyme function and activity in the body. Deficiencies in enzyme precursors can lead to enzyme deficiencies, which can cause a range of health problems. For example, a deficiency in the enzyme precursor for the enzyme lactase can lead to lactose intolerance, a condition in which the body is unable to digest lactose, a sugar found in milk and other dairy products.

RNA, Transfer, Ser (also known as tRNA Ser) is a type of transfer RNA (tRNA) molecule that plays a crucial role in protein synthesis. It is responsible for bringing the amino acid serine to the ribosome during the process of translation, where the genetic information in messenger RNA (mRNA) is used to synthesize proteins. tRNA Ser molecules are composed of a small RNA chain that folds into a specific three-dimensional structure, which allows it to recognize and bind to the corresponding codon on the mRNA molecule. The amino acid serine is then attached to the tRNA Ser molecule, and the complex moves to the ribosome, where the amino acid is added to the growing protein chain. In summary, RNA, Transfer, Ser is a type of tRNA molecule that plays a critical role in protein synthesis by bringing the amino acid serine to the ribosome during translation.

Cyclic AMP-dependent protein kinases (also known as cAMP-dependent protein kinases or PKA) are a family of enzymes that play a crucial role in regulating various cellular processes in the body. These enzymes are activated by the presence of cyclic AMP (cAMP), a second messenger molecule that is produced in response to various stimuli, such as hormones, neurotransmitters, and growth factors. PKA is a heterotetrameric enzyme composed of two regulatory subunits and two catalytic subunits. The regulatory subunits bind to cAMP and prevent the catalytic subunits from phosphorylating their target proteins. When cAMP levels rise, the regulatory subunits are activated and release the catalytic subunits, allowing them to phosphorylate their target proteins. PKA is involved in a wide range of cellular processes, including metabolism, gene expression, cell proliferation, and differentiation. It phosphorylates various proteins, including enzymes, transcription factors, and ion channels, leading to changes in their activity and function. In the medical field, PKA plays a critical role in various diseases and disorders, including cancer, diabetes, and cardiovascular disease. For example, PKA is involved in the regulation of insulin secretion in pancreatic beta cells, and its dysfunction has been implicated in the development of type 2 diabetes. PKA is also involved in the regulation of blood pressure and heart function, and its dysfunction has been linked to the development of hypertension and heart disease.

Proteinase Inhibitory Proteins, Secretory (PIPs) are a group of proteins that are secreted by cells and function to inhibit the activity of proteases, which are enzymes that break down proteins. PIPs play important roles in regulating various physiological processes, including inflammation, wound healing, and immune responses. There are several types of PIPs, including serine protease inhibitors (serpins), cysteine protease inhibitors (cystatins), and metalloprotease inhibitors (TIMPs). These inhibitors bind to proteases and prevent them from cleaving their target proteins, thereby regulating the activity of these enzymes. In the medical field, PIPs have been studied for their potential therapeutic applications. For example, some PIPs have been shown to have anti-inflammatory and anti-cancer effects, and are being investigated as potential treatments for various diseases. Additionally, PIPs have been used as diagnostic markers for certain conditions, such as liver disease and cancer.

In the medical field, RNA, Messenger (mRNA) refers to a type of RNA molecule that carries genetic information from DNA in the nucleus of a cell to the ribosomes, where proteins are synthesized. During the process of transcription, the DNA sequence of a gene is copied into a complementary RNA sequence called messenger RNA (mRNA). This mRNA molecule then leaves the nucleus and travels to the cytoplasm of the cell, where it binds to ribosomes and serves as a template for the synthesis of a specific protein. The sequence of nucleotides in the mRNA molecule determines the sequence of amino acids in the protein that is synthesized. Therefore, changes in the sequence of nucleotides in the mRNA molecule can result in changes in the amino acid sequence of the protein, which can affect the function of the protein and potentially lead to disease. mRNA molecules are often used in medical research and therapy as a way to introduce new genetic information into cells. For example, mRNA vaccines work by introducing a small piece of mRNA that encodes for a specific protein, which triggers an immune response in the body.

14-3-3 proteins are a family of proteins that are found in all eukaryotic cells. They are named for their ability to form dimers or trimers, with each subunit consisting of 143 amino acids. These proteins play a variety of roles in cellular processes, including regulation of protein activity, cell cycle progression, and stress response. They are also involved in the development and progression of certain diseases, such as cancer and neurodegenerative disorders. In the medical field, 14-3-3 proteins are often studied as potential diagnostic or therapeutic targets for these and other diseases.

Bacterial proteins are proteins that are synthesized by bacteria. They are essential for the survival and function of bacteria, and play a variety of roles in bacterial metabolism, growth, and pathogenicity. Bacterial proteins can be classified into several categories based on their function, including structural proteins, metabolic enzymes, regulatory proteins, and toxins. Structural proteins provide support and shape to the bacterial cell, while metabolic enzymes are involved in the breakdown of nutrients and the synthesis of new molecules. Regulatory proteins control the expression of other genes, and toxins can cause damage to host cells and tissues. Bacterial proteins are of interest in the medical field because they can be used as targets for the development of antibiotics and other antimicrobial agents. They can also be used as diagnostic markers for bacterial infections, and as vaccines to prevent bacterial diseases. Additionally, some bacterial proteins have been shown to have therapeutic potential, such as enzymes that can break down harmful substances in the body or proteins that can stimulate the immune system.

In the medical field, carrier proteins are proteins that transport molecules across cell membranes or within cells. These proteins bind to specific molecules, such as hormones, nutrients, or waste products, and facilitate their movement across the membrane or within the cell. Carrier proteins play a crucial role in maintaining the proper balance of molecules within cells and between cells. They are involved in a wide range of physiological processes, including nutrient absorption, hormone regulation, and waste elimination. There are several types of carrier proteins, including facilitated diffusion carriers, active transport carriers, and ion channels. Each type of carrier protein has a specific function and mechanism of action. Understanding the role of carrier proteins in the body is important for diagnosing and treating various medical conditions, such as genetic disorders, metabolic disorders, and neurological disorders.

DNA-binding proteins are a class of proteins that interact with DNA molecules to regulate gene expression. These proteins recognize specific DNA sequences and bind to them, thereby affecting the transcription of genes into messenger RNA (mRNA) and ultimately the production of proteins. DNA-binding proteins play a crucial role in many biological processes, including cell division, differentiation, and development. They can act as activators or repressors of gene expression, depending on the specific DNA sequence they bind to and the cellular context in which they are expressed. Examples of DNA-binding proteins include transcription factors, histones, and non-histone chromosomal proteins. Transcription factors are proteins that bind to specific DNA sequences and regulate the transcription of genes by recruiting RNA polymerase and other factors to the promoter region of a gene. Histones are proteins that package DNA into chromatin, and non-histone chromosomal proteins help to organize and regulate chromatin structure. DNA-binding proteins are important targets for drug discovery and development, as they play a central role in many diseases, including cancer, genetic disorders, and infectious diseases.

Membrane proteins are proteins that are embedded within the lipid bilayer of a cell membrane. They play a crucial role in regulating the movement of substances across the membrane, as well as in cell signaling and communication. There are several types of membrane proteins, including integral membrane proteins, which span the entire membrane, and peripheral membrane proteins, which are only in contact with one or both sides of the membrane. Membrane proteins can be classified based on their function, such as transporters, receptors, channels, and enzymes. They are important for many physiological processes, including nutrient uptake, waste elimination, and cell growth and division.

Proto-oncogenes are normal genes that are involved in regulating cell growth and division. When these genes are mutated or overexpressed, they can become oncogenes, which can lead to the development of cancer. Proto-oncogenes are also known as proto-oncogene proteins.

Esterases are a class of enzymes that catalyze the hydrolysis of esters, which are compounds formed by the reaction of an acid and an alcohol. In the medical field, esterases are important in the metabolism of many drugs and other substances, as well as in the breakdown of fats and other lipids in the body. There are many different types of esterases, including carboxylesterases, lipases, and cholinesterases. Carboxylesterases are found in many tissues throughout the body and are involved in the metabolism of a wide range of drugs and other substances. Lipases are enzymes that break down fats and other lipids, and are important in the digestion and absorption of dietary fats. Cholinesterases are enzymes that break down the neurotransmitter acetylcholine, and are important in the regulation of muscle movement and other functions. Esterases can be inhibited or activated by various substances, and changes in their activity can have important effects on the body. For example, certain drugs can inhibit the activity of esterases, leading to an accumulation of drugs or other substances in the body and potentially causing toxicity. On the other hand, esterase activators can increase the activity of these enzymes, leading to faster metabolism and elimination of drugs and other substances from the body.

Proto-oncogene proteins c-akt, also known as protein kinase B (PKB), is a serine/threonine kinase that plays a critical role in various cellular processes, including cell survival, proliferation, and metabolism. It is a member of the Akt family of kinases, which are activated by various growth factors and cytokines. In the context of cancer, c-akt has been shown to be frequently activated in many types of tumors and is often associated with poor prognosis. Activation of c-akt can lead to increased cell survival and resistance to apoptosis, which can contribute to tumor growth and progression. Additionally, c-akt has been implicated in the regulation of angiogenesis, invasion, and metastasis, further contributing to the development and progression of cancer. Therefore, the study of c-akt and its role in cancer has become an important area of research in the medical field, with the goal of developing targeted therapies to inhibit its activity and potentially treat cancer.

In the medical field, the term "cattle" refers to large domesticated animals that are raised for their meat, milk, or other products. Cattle are a common source of food and are also used for labor in agriculture, such as plowing fields or pulling carts. In veterinary medicine, cattle are often referred to as "livestock" and may be treated for a variety of medical conditions, including diseases, injuries, and parasites. Some common medical issues that may affect cattle include respiratory infections, digestive problems, and musculoskeletal disorders. Cattle may also be used in medical research, particularly in the fields of genetics and agriculture. For example, scientists may study the genetics of cattle to develop new breeds with desirable traits, such as increased milk production or resistance to disease.

Aprotinin is a protease inhibitor that is derived from bovine lung. It is used in the medical field as an antifibrinolytic agent to reduce blood loss during surgery and to prevent excessive bleeding in patients with certain medical conditions. Aprotinin works by inhibiting the activity of enzymes called proteases, which are involved in the breakdown of blood clots. It is typically administered intravenously and is available as a sterile powder that must be reconstituted with sterile water before use. Aprotinin has been used in a variety of surgical procedures, including coronary artery bypass surgery, liver transplantation, and kidney transplantation. However, its use has been controversial due to concerns about its safety and efficacy, and it is no longer widely used in many countries.

Calcium-calmodulin-dependent protein kinases (CaMKs) are a family of enzymes that play a crucial role in regulating various cellular processes in response to changes in intracellular calcium levels. These enzymes are activated by the binding of calcium ions to a regulatory protein called calmodulin, which then binds to and activates the CaMK. CaMKs are involved in a wide range of cellular functions, including muscle contraction, neurotransmitter release, gene expression, and cell division. They are also involved in the regulation of various diseases, including heart disease, neurological disorders, and cancer. In the medical field, CaMKs are the target of several drugs, including those used to treat heart disease and neurological disorders. For example, calcium channel blockers, which are used to treat high blood pressure and chest pain, can also block the activity of CaMKs. Similarly, drugs that target CaMKs are being developed as potential treatments for neurological disorders such as Alzheimer's disease and Parkinson's disease.

Proteins are complex biomolecules made up of amino acids that play a crucial role in many biological processes in the human body. In the medical field, proteins are studied extensively as they are involved in a wide range of functions, including: 1. Enzymes: Proteins that catalyze chemical reactions in the body, such as digestion, metabolism, and energy production. 2. Hormones: Proteins that regulate various bodily functions, such as growth, development, and reproduction. 3. Antibodies: Proteins that help the immune system recognize and neutralize foreign substances, such as viruses and bacteria. 4. Transport proteins: Proteins that facilitate the movement of molecules across cell membranes, such as oxygen and nutrients. 5. Structural proteins: Proteins that provide support and shape to cells and tissues, such as collagen and elastin. Protein abnormalities can lead to various medical conditions, such as genetic disorders, autoimmune diseases, and cancer. Therefore, understanding the structure and function of proteins is essential for developing effective treatments and therapies for these conditions.

The cell membrane, also known as the plasma membrane, is a thin, flexible barrier that surrounds and encloses the cell. It is composed of a phospholipid bilayer, which consists of two layers of phospholipid molecules arranged tail-to-tail. The hydrophobic tails of the phospholipids face inward, while the hydrophilic heads face outward, forming a barrier that separates the inside of the cell from the outside environment. The cell membrane also contains various proteins, including channels, receptors, and transporters, which allow the cell to communicate with its environment and regulate the movement of substances in and out of the cell. In addition, the cell membrane is studded with cholesterol molecules, which help to maintain the fluidity and stability of the membrane. The cell membrane plays a crucial role in maintaining the integrity and function of the cell, and it is involved in a wide range of cellular processes, including cell signaling, cell adhesion, and cell division.

In the medical field, amino acid motifs refer to specific sequences of amino acids that are commonly found in proteins. These motifs can play important roles in protein function, such as binding to other molecules, catalyzing chemical reactions, or stabilizing the protein structure. Amino acid motifs can also be used as diagnostic or prognostic markers for certain diseases, as changes in the amino acid sequence of a protein can be associated with the development or progression of a particular condition. Additionally, amino acid motifs can be targeted by drugs or other therapeutic agents to modulate protein function and treat disease.

Cricetinae is a subfamily of rodents that includes hamsters, voles, and lemmings. These animals are typically small to medium-sized and have a broad, flat head and a short, thick body. They are found in a variety of habitats around the world, including grasslands, forests, and deserts. In the medical field, Cricetinae are often used as laboratory animals for research purposes, as they are easy to care for and breed, and have a relatively short lifespan. They are also used in studies of genetics, physiology, and behavior.

DNA, or deoxyribonucleic acid, is a molecule that carries genetic information in living organisms. It is composed of four types of nitrogen-containing molecules called nucleotides, which are arranged in a specific sequence to form the genetic code. In the medical field, DNA is often studied as a tool for understanding and diagnosing genetic disorders. Genetic disorders are caused by changes in the DNA sequence that can affect the function of genes, leading to a variety of health problems. By analyzing DNA, doctors and researchers can identify specific genetic mutations that may be responsible for a particular disorder, and develop targeted treatments or therapies to address the underlying cause of the condition. DNA is also used in forensic science to identify individuals based on their unique genetic fingerprint. This is because each person's DNA sequence is unique, and can be used to distinguish one individual from another. DNA analysis is also used in criminal investigations to help solve crimes by linking DNA evidence to suspects or victims.

Cathepsins are a family of proteolytic enzymes that are found in the lysosomes of cells. They are responsible for breaking down a variety of proteins, including enzymes, hormones, and cellular debris. In the medical field, cathepsins are of interest because they play a role in many physiological processes, including cell growth and differentiation, immune function, and the degradation of damaged proteins. They are also involved in a number of pathological conditions, including cancer, neurodegenerative diseases, and inflammatory disorders. As such, cathepsins are the subject of ongoing research in the field of medicine, with the goal of developing new therapeutic strategies based on their activity.

Proto-oncogene proteins c-raf, also known as RAS-activating factor (RAF) or serine/threonine-protein kinase c-raf, are a family of proteins that play a critical role in regulating cell growth and division. They are encoded by the "raf" gene and are involved in the RAS/MAPK signaling pathway, which is a key pathway in cell proliferation, differentiation, and survival. In normal cells, the activity of c-raf proteins is tightly regulated, but mutations in the "raf" gene can lead to the overexpression or constitutive activation of these proteins, which can contribute to the development of cancer. Specifically, mutations in the "BRAF" gene, which encodes the B-Raf protein, are commonly found in several types of cancer, including melanoma, thyroid cancer, and colorectal cancer. In the medical field, c-raf proteins are often targeted for therapeutic intervention in cancer treatment. For example, small molecule inhibitors of the B-Raf protein have been developed and are currently being used in the treatment of certain types of cancer. Additionally, research is ongoing to develop new therapies that target other members of the c-raf family of proteins.

Serine-tRNA ligase is an enzyme that plays a crucial role in protein synthesis. It catalyzes the formation of an ester bond between the amino acid serine and its corresponding transfer RNA (tRNA) molecule. This process is known as aminoacylation and is a critical step in the translation of genetic information from messenger RNA (mRNA) into proteins. In the medical field, serine-tRNA ligase is of particular interest because it is involved in the production of several important enzymes and proteins, including those involved in energy metabolism and DNA repair. Mutations in the gene that encodes serine-tRNA ligase have been linked to several genetic disorders, including Diamond-Blackfan anemia, a rare blood disorder characterized by a deficiency in red blood cells. In addition, serine-tRNA ligase has been studied as a potential target for the development of new antibiotics and cancer therapies. Its inhibition can disrupt the production of essential enzymes and proteins, leading to the death of bacteria or cancer cells.

Casein kinases are a family of enzymes that phosphorylate casein, a major milk protein, and other proteins. In the medical field, casein kinases have been studied for their role in various cellular processes, including cell cycle regulation, signal transduction, and gene expression. Some casein kinases have also been implicated in the development of certain diseases, such as cancer and neurodegenerative disorders. Research on casein kinases continues to be an active area of investigation in the field of molecular biology and medicine.

The cell nucleus is a membrane-bound organelle found in eukaryotic cells that contains the cell's genetic material, or DNA. It is typically located in the center of the cell and is surrounded by a double membrane called the nuclear envelope. The nucleus is responsible for regulating gene expression and controlling the cell's activities. It contains a dense, irregularly shaped mass of chromatin, which is made up of DNA and associated proteins. The nucleus also contains a small body called the nucleolus, which is responsible for producing ribosomes, the cellular structures that synthesize proteins.

In the medical field, isoenzymes refer to different forms of enzymes that have the same chemical structure and catalytic activity, but differ in their amino acid sequence. These differences can arise due to genetic variations or post-translational modifications, such as phosphorylation or glycosylation. Isoenzymes are often used in medical diagnosis and treatment because they can provide information about the function and health of specific organs or tissues. For example, the presence of certain isoenzymes in the blood can indicate liver or kidney disease, while changes in the levels of specific isoenzymes in the brain can be indicative of neurological disorders. In addition, isoenzymes can be used as biomarkers for certain diseases or conditions, and can be targeted for therapeutic intervention. For example, drugs that inhibit specific isoenzymes can be used to treat certain types of cancer or heart disease.

Nuclear proteins are proteins that are found within the nucleus of a cell. The nucleus is the control center of the cell, where genetic material is stored and regulated. Nuclear proteins play a crucial role in many cellular processes, including DNA replication, transcription, and gene regulation. There are many different types of nuclear proteins, each with its own specific function. Some nuclear proteins are involved in the structure and organization of the nucleus itself, while others are involved in the regulation of gene expression. Nuclear proteins can also interact with other proteins, DNA, and RNA molecules to carry out their functions. In the medical field, nuclear proteins are often studied in the context of diseases such as cancer, where changes in the expression or function of nuclear proteins can contribute to the development and progression of the disease. Additionally, nuclear proteins are important targets for drug development, as they can be targeted to treat a variety of diseases.

High-pressure liquid chromatography (HPLC) is a technique used in the medical field to separate and analyze complex mixtures of compounds. It involves the use of a liquid mobile phase that is forced through a column packed with a stationary phase under high pressure. The compounds in the mixture interact with the stationary phase to different extents, causing them to separate as they pass through the column. The separated compounds are then detected and quantified using a detector, such as a UV detector or a mass spectrometer. HPLC is commonly used in the analysis of drugs, biological samples, and other complex mixtures in the medical field.

Aspartic acid is an amino acid that is naturally occurring in the human body. It is a non-essential amino acid, meaning that it can be synthesized by the body from other compounds and does not need to be obtained through the diet. Aspartic acid is found in high concentrations in the brain and spinal cord, and it plays a role in various physiological processes, including the production of neurotransmitters and the regulation of acid-base balance in the body. In the medical field, aspartic acid is sometimes used as a diagnostic tool to measure the function of the liver and kidneys, as well as to monitor the progression of certain diseases, such as cancer and HIV. It is also used as a dietary supplement in some cases.

Proto-oncogene proteins c-pim-1, also known as Pim-1, are a family of serine/threonine kinases that play a role in cell proliferation, survival, and differentiation. They are encoded by the PIM1 gene and are expressed in a variety of tissues, including the hematopoietic system, the brain, and the liver. Pim-1 is involved in the regulation of cell cycle progression, apoptosis, and the response to DNA damage. It has been implicated in the development of various types of cancer, including leukemia, lymphoma, and solid tumors. In addition, Pim-1 has been shown to play a role in the development of resistance to chemotherapy and radiation therapy in some cancer cells. Targeting Pim-1 has been proposed as a potential therapeutic strategy for the treatment of cancer. Several small molecule inhibitors of Pim-1 have been developed and are currently being tested in preclinical and clinical studies.

Carboxypeptidases are a group of enzymes that cleave peptide bonds at the C-terminus (the end) of amino acids in proteins or peptides. These enzymes are found in various tissues throughout the body, including the pancreas, liver, and kidneys, and play important roles in the metabolism of proteins and peptides. There are several different types of carboxypeptidases, each with its own specific substrate specificity and tissue distribution. For example, carboxypeptidase A is primarily found in the pancreas and is involved in the digestion of proteins, while carboxypeptidase B is found in the liver and kidneys and is involved in the metabolism of hormones and other signaling molecules. Carboxypeptidases are important for maintaining the proper balance of amino acids in the body and for regulating the activity of various signaling molecules. In some cases, defects in carboxypeptidase activity can lead to certain medical conditions, such as inherited disorders of protein metabolism or kidney disease.

Ethanolamine is a chemical compound that is commonly used in the medical field as a surfactant, emulsifier, and preservative. It is a derivative of ammonia and ethanol, and is often used in the production of various pharmaceuticals and medical devices. In the medical field, ethanolamine is used in a variety of applications, including as a component in the production of certain antibiotics, as an ingredient in the formulation of topical creams and ointments, and as a preservative in medical devices such as catheters and syringes. Ethanolamine is also used in the production of certain anticoagulants, such as heparin, and is sometimes used as a substitute for heparin in certain medical procedures. It is important to note that while ethanolamine is generally considered safe for medical use, it can cause skin irritation and allergic reactions in some individuals. As with any medical substance, it is important to use ethanolamine under the guidance of a qualified healthcare professional.

Transferases are a class of enzymes that catalyze the transfer of a functional group from one molecule to another. In the medical field, transferases are often used to study liver function and to diagnose liver diseases. There are several types of transferases, including: 1. Alanine transaminase (ALT): This enzyme is found primarily in liver cells and is released into the bloodstream when liver cells are damaged or destroyed. High levels of ALT in the blood can indicate liver damage or disease. 2. Aspartate transaminase (AST): This enzyme is also found in liver cells, but it is also present in other tissues such as the heart, muscles, and kidneys. High levels of AST in the blood can indicate liver or heart damage. 3. Glutamate dehydrogenase (GDH): This enzyme is found in the liver, kidneys, and other tissues. High levels of GDH in the blood can indicate liver or kidney damage. 4. Alkaline phosphatase (ALP): This enzyme is found in the liver, bones, and other tissues. High levels of ALP in the blood can indicate liver or bone disease. Overall, transferases are important markers of liver function and can be used to diagnose and monitor liver diseases.

In the medical field, a conserved sequence refers to a segment of DNA or RNA that is highly similar or identical across different species or organisms. These sequences are often important for the function of the molecule, and their conservation suggests that they have been evolutionarily conserved for a long time. Conserved sequences can be found in a variety of contexts, including in coding regions of genes, in regulatory regions that control gene expression, and in non-coding regions that have important functional roles. They can also be used as markers for identifying related species or for studying the evolution of a particular gene or pathway. Conserved sequences are often studied using bioinformatics tools and techniques, such as sequence alignment and phylogenetic analysis. By identifying and analyzing conserved sequences, researchers can gain insights into the function and evolution of genes and other biological molecules.

Glycogen Synthase Kinase 3 (GSK3) is a family of serine/threonine protein kinases that play a crucial role in various cellular processes, including metabolism, cell signaling, and gene expression. In the medical field, GSK3 has been implicated in the development and progression of several diseases, including diabetes, neurodegenerative disorders, and cancer. GSK3 is activated by various stimuli, including stress, inflammation, and insulin resistance, and its activity is regulated by phosphorylation and dephosphorylation. When activated, GSK3 phosphorylates and inactivates glycogen synthase, the enzyme responsible for glycogen synthesis, leading to reduced glycogen storage in the liver and muscles. This can contribute to the development of diabetes and other metabolic disorders. In addition to its role in metabolism, GSK3 has also been implicated in the regulation of cell signaling pathways, including the Wnt signaling pathway, which plays a critical role in cell proliferation, differentiation, and survival. Dysregulation of GSK3 activity in the Wnt signaling pathway has been implicated in the development of several types of cancer, including colon, breast, and ovarian cancer. Overall, GSK3 is a key regulator of cellular processes and its dysregulation has been implicated in the development and progression of several diseases. As such, it is an important target for the development of new therapeutic strategies for these diseases.

Protein Phosphatase 1 (PP1) is a type of enzyme that plays a crucial role in regulating various cellular processes by removing phosphate groups from proteins. It is one of the most abundant protein phosphatases in eukaryotic cells and is involved in a wide range of cellular functions, including cell cycle regulation, signal transduction, and gene expression. PP1 is a serine/threonine phosphatase, meaning that it removes phosphate groups from serine and threonine residues on target proteins. It is regulated by a variety of protein inhibitors, which can either activate or inhibit its activity depending on the cellular context. Dysregulation of PP1 activity has been implicated in a number of diseases, including cancer, neurodegenerative disorders, and cardiovascular disease. Therefore, understanding the mechanisms that regulate PP1 activity is an important area of research in the medical field.

Chromatography, Gel is a technique used in the medical field to separate and analyze different components of a mixture. It involves passing a sample through a gel matrix, which allows different components to move through the gel at different rates based on their size, charge, or other properties. This separation is then detected and analyzed using various techniques, such as UV absorbance or fluorescence. Gel chromatography is commonly used in the purification of proteins, nucleic acids, and other biomolecules, as well as in the analysis of complex mixtures in environmental and forensic science.

Antibodies, Phospho-Specific are laboratory reagents that are designed to specifically bind to proteins that have been phosphorylated, a post-translational modification that involves the addition of a phosphate group to the amino acid residue. These reagents are often used in research to study the role of phosphorylation in cellular signaling pathways and to identify specific proteins that are involved in these pathways. They are also used in diagnostic tests to detect the presence of phosphorylated proteins in biological samples, such as blood or tissue.

Cercopithecus aethiops, commonly known as the vervet monkey, is a species of Old World monkey that is native to Africa. In the medical field, Cercopithecus aethiops is often used in research studies as a model organism to study a variety of diseases and conditions, including infectious diseases, neurological disorders, and cancer. This is because vervet monkeys share many genetic and physiological similarities with humans, making them useful for studying human health and disease.

Tosyllysine Chloromethyl Ketone (TLCK) is a protease inhibitor that is commonly used in medical research to study the activity of proteases, which are enzymes that break down proteins. TLCK works by irreversibly binding to the active site of proteases, preventing them from cleaving other proteins. This makes TLCK a useful tool for studying the function of specific proteases and for inhibiting their activity in vitro or in vivo. TLCK is often used in combination with other protease inhibitors to study the role of specific proteases in various biological processes and diseases.

A cell line, tumor is a type of cell culture that is derived from a cancerous tumor. These cell lines are grown in a laboratory setting and are used for research purposes, such as studying the biology of cancer and testing potential new treatments. They are typically immortalized, meaning that they can continue to divide and grow indefinitely, and they often exhibit the characteristics of the original tumor from which they were derived, such as specific genetic mutations or protein expression patterns. Cell lines, tumor are an important tool in cancer research and have been used to develop many of the treatments that are currently available for cancer patients.

Proline is an amino acid that is commonly found in proteins. It is a non-essential amino acid, meaning that it can be synthesized by the body from other amino acids. In the medical field, proline is often used as a diagnostic tool to measure the levels of certain enzymes in the body, such as alanine transaminase (ALT) and aspartate transaminase (AST). These enzymes are released into the bloodstream when the liver is damaged, so elevated levels of proline can indicate liver disease. Proline is also used in the treatment of certain medical conditions, such as Peyronie's disease, which is a condition that causes curvature of the penis. Proline has been shown to help improve the flexibility of the penis and reduce the curvature associated with Peyronie's disease.

Crystallography, X-ray is a technique used in the medical field to study the structure of biological molecules, such as proteins and nucleic acids, by analyzing the diffraction patterns produced by X-rays passing through the sample. This technique is used to determine the three-dimensional structure of these molecules, which is important for understanding their function and for developing new drugs and therapies. X-ray crystallography is a powerful tool that has been instrumental in advancing our understanding of many important biological processes and diseases.

Cathepsin C is a protease enzyme that is involved in the degradation of proteins within cells. It is a member of the cysteine protease family and is primarily found in the lysosomes of cells. Cathepsin C plays a role in the turnover of various cellular proteins, including those involved in immune responses and the degradation of extracellular matrix components. It is also involved in the activation of other proteases, such as granzymes, which are important in the immune response. In the medical field, cathepsin C has been studied in relation to various diseases, including cancer, autoimmune disorders, and neurodegenerative diseases.

Oxazoles are a class of heterocyclic compounds that contain a five-membered ring with two nitrogen atoms and three carbon atoms. They are commonly used in the medical field as pharmaceuticals, particularly as antifungal agents, antiviral agents, and anti-inflammatory agents. Some examples of oxazole-containing drugs include fluconazole (an antifungal), oseltamivir (an antiviral), and celecoxib (an anti-inflammatory). Oxazoles are also used as intermediates in the synthesis of other drugs and as corrosion inhibitors in various industrial applications.

Apoptosis is a programmed cell death process that occurs naturally in the body. It is a vital mechanism for maintaining tissue homeostasis and eliminating damaged or unwanted cells. During apoptosis, cells undergo a series of changes that ultimately lead to their death and removal from the body. These changes include chromatin condensation, DNA fragmentation, and the formation of apoptotic bodies, which are engulfed by neighboring cells or removed by immune cells. Apoptosis plays a critical role in many physiological processes, including embryonic development, tissue repair, and immune function. However, when apoptosis is disrupted or dysregulated, it can contribute to the development of various diseases, including cancer, autoimmune disorders, and neurodegenerative diseases.

Thrombin is an enzyme that plays a crucial role in the blood clotting process. It is produced by the activation of the protein thromboplastin, which is present in the blood. Thrombin is responsible for converting fibrinogen, a soluble plasma protein, into insoluble fibrin fibers, which form the meshwork of a blood clot. Thrombin also activates platelets, which are small cell fragments that play a key role in blood clotting. It does this by cleaving a protein called von Willebrand factor, which binds platelets to the site of injury and helps them to aggregate and form a plug. In addition to its role in blood clotting, thrombin has other functions in the body, including the activation of certain types of cells and the regulation of inflammation. It is also used in medicine as a medication to stop bleeding, as well as in the treatment of certain blood disorders and cardiovascular diseases.

Protease Nexins (PNs) are a family of proteins that regulate the activity of proteases, which are enzymes that break down other proteins. PNs are primarily found in the nervous system and are involved in a variety of cellular processes, including cell signaling, migration, and differentiation. They are also involved in the regulation of blood clotting and the immune response. In the medical field, PNs are of interest because they have been implicated in a number of diseases, including neurodegenerative disorders, cardiovascular disease, and cancer.

3T3 cells are a type of mouse fibroblast cell line that are commonly used in biomedical research. They are derived from the mouse embryo and are known for their ability to grow and divide indefinitely in culture. 3T3 cells are often used as a model system for studying cell growth, differentiation, and other cellular processes. They are also used in the development of new drugs and therapies, as well as in the testing of cosmetic and other products for safety and efficacy.

Granzymes are a family of serine proteases that are produced by cytotoxic T cells and natural killer cells. They are stored in granules within these immune cells and are released upon activation. Granzymes are important mediators of cell death in the immune response, particularly in the elimination of virus-infected cells and cancer cells. They can induce apoptosis (programmed cell death) in target cells by activating caspases, a family of proteases that are essential for the execution of apoptosis. Granzymes are also involved in the regulation of immune cell activation and differentiation.

P21-activated kinases (PAKs) are a family of serine/threonine kinases that play important roles in cell signaling and regulation. They are activated by the small GTPase Rac and Cdc42, which are involved in a variety of cellular processes, including cell migration, proliferation, and differentiation. PAKs are composed of three main domains: an N-terminal kinase domain, a central regulatory domain, and a C-terminal domain. The regulatory domain contains a PBD (PAK-binding domain) that interacts with Rac and Cdc42, and a P-loop that is involved in ATP binding and hydrolysis. The C-terminal domain contains a coiled-coil region that mediates interactions with other proteins. PAKs are involved in a variety of cellular processes, including cell migration, proliferation, and differentiation. They have been implicated in the development of various diseases, including cancer, cardiovascular disease, and neurological disorders. In addition, PAKs have been shown to play a role in the regulation of the immune system and in the development of inflammatory diseases.

In the medical field, oligopeptides are short chains of amino acids that typically contain between two and 50 amino acids. They are often used in various medical applications due to their unique properties and potential therapeutic effects. One of the main benefits of oligopeptides is their ability to penetrate the skin and reach underlying tissues, making them useful in the development of topical treatments for a variety of conditions. For example, oligopeptides have been shown to improve skin elasticity, reduce the appearance of wrinkles, and promote the growth of new skin cells. Oligopeptides are also used in the development of medications for a variety of conditions, including osteoporosis, diabetes, and hypertension. They work by interacting with specific receptors in the body, which can help to regulate various physiological processes and improve overall health. Overall, oligopeptides are a promising area of research in the medical field, with potential applications in a wide range of therapeutic areas.

Alpha 1-Antitrypsin (AAT) is a protein produced by the liver that plays a crucial role in protecting the lungs from damage caused by enzymes called proteases. Proteases are enzymes that break down proteins, and in the lungs, they can cause inflammation and damage to the airways and lung tissue. AAT acts as a protease inhibitor, binding to and neutralizing proteases that would otherwise cause damage to the lungs. It is particularly important in protecting the lungs from damage caused by cigarette smoke, air pollution, and other irritants. Deficiency in AAT can lead to a condition called alpha 1-antitrypsin deficiency, which is a genetic disorder that can cause lung disease, liver disease, and other health problems. People with alpha 1-antitrypsin deficiency produce low levels of AAT or produce AAT that is not functional, leading to an increased risk of lung damage and other health problems.

In the medical field, cytoplasm refers to the gel-like substance that fills the cell membrane of a living cell. It is composed of various organelles, such as mitochondria, ribosomes, and the endoplasmic reticulum, as well as various dissolved molecules, including proteins, lipids, and carbohydrates. The cytoplasm plays a crucial role in many cellular processes, including metabolism, protein synthesis, and cell division. It also serves as a site for various cellular activities, such as the movement of organelles within the cell and the transport of molecules across the cell membrane. In addition, the cytoplasm is involved in maintaining the structural integrity of the cell and protecting it from external stressors, such as toxins and pathogens. Overall, the cytoplasm is a vital component of the cell and plays a critical role in its function and survival.

CHO cells are a type of Chinese hamster ovary (CHO) cell line that is commonly used in the biotechnology industry for the production of recombinant proteins. These cells are derived from the ovaries of Chinese hamsters and have been genetically modified to produce large amounts of a specific protein or protein complex. CHO cells are often used as a host cell for the production of therapeutic proteins, such as monoclonal antibodies, growth factors, and enzymes. They are also used in research to study the structure and function of proteins, as well as to test the safety and efficacy of new drugs. One of the advantages of using CHO cells is that they are relatively easy to culture and can be grown in large quantities. They are also able to produce high levels of recombinant proteins, making them a popular choice for the production of biopharmaceuticals. However, like all cell lines, CHO cells can also have limitations and may not be suitable for all types of protein production.

Mitogen-Activated Protein Kinases (MAPKs) are a family of enzymes that play a crucial role in cellular signaling pathways. They are involved in regulating various cellular processes such as cell growth, differentiation, proliferation, survival, and apoptosis. MAPKs are activated by extracellular signals such as growth factors, cytokines, and hormones, which bind to specific receptors on the cell surface. This activation leads to a cascade of phosphorylation events, where MAPKs phosphorylate and activate downstream effector molecules, such as transcription factors, that regulate gene expression. In the medical field, MAPKs are of great interest due to their involvement in various diseases, including cancer, inflammatory disorders, and neurological disorders. For example, mutations in MAPK signaling pathways are commonly found in many types of cancer, and targeting these pathways has become an important strategy for cancer therapy. Additionally, MAPKs are involved in the regulation of immune responses, and dysregulation of these pathways has been implicated in various inflammatory disorders. Finally, MAPKs play a role in the development and maintenance of the nervous system, and dysfunction of these pathways has been linked to neurological disorders such as Alzheimer's disease and Parkinson's disease.

Chromatography, Ion Exchange is a technique used in the medical field to separate and purify compounds based on their charge and size. It involves passing a solution containing the compounds of interest through a column packed with a resin that has charged functional groups. The charged functional groups on the resin interact with the charged compounds in the solution, causing them to be adsorbed onto the resin. The compounds are then eluted from the resin using a solvent that selectively dissolves the compounds based on their charge and size. This technique is commonly used in the purification of proteins, peptides, and other charged molecules used in medical research and drug development.

In the medical field, "Ethers, Cyclic" refers to a class of organic compounds that contain a cyclic ring structure with an oxygen atom bonded to two carbon atoms. These compounds are also known as cycloalkanes with an ether group. Ethers, Cyclic are commonly used as solvents in medical and pharmaceutical applications, as well as in the production of various chemicals and plastics. Some examples of cyclic ethers include tetrahydrofuran (THF), dioxane, and 1,4-dioxane. It is important to note that some cyclic ethers, such as 1,4-dioxane, have been linked to cancer and other health problems when used in high concentrations or for prolonged periods of time. Therefore, their use in medical and industrial applications is regulated and monitored to ensure safety.

Transaminases are a group of enzymes that catalyze the transfer of an amino group from one amino acid to another. In the medical field, the most commonly measured transaminases are alanine aminotransferase (ALT) and aspartate aminotransferase (AST). These enzymes are found in high concentrations in the liver, but are also present in other tissues such as the heart, muscles, and kidneys. Elevated levels of ALT and AST in the blood are often an indication of liver damage or disease. This can be caused by a variety of factors, including viral hepatitis, alcohol abuse, drug toxicity, autoimmune disorders, and certain genetic conditions. In some cases, elevated transaminase levels may also be a sign of heart or muscle damage. In addition to their role in liver function, transaminases are also used as markers of liver disease in clinical practice. They are often included in routine blood tests, and elevated levels can prompt further diagnostic testing and treatment.

Insulin receptor substrate proteins (IRS proteins) are a family of proteins that play a crucial role in the insulin signaling pathway. They are intracellular proteins that are recruited to the insulin receptor upon binding of insulin to the receptor's extracellular domain. Once recruited, IRS proteins undergo a series of phosphorylation events that activate downstream signaling pathways, including the PI3K/Akt pathway and the Ras/MAPK pathway. These pathways regulate various cellular processes, such as glucose metabolism, cell growth, and survival. Mutations in IRS proteins have been implicated in several diseases, including type 2 diabetes, obesity, and certain types of cancer. Therefore, understanding the function and regulation of IRS proteins is important for developing new therapeutic strategies for these diseases.

Histidine is an amino acid that is naturally occurring in the human body. It is a building block of proteins and is essential for the proper functioning of many bodily processes. In the medical field, histidine is often used as a diagnostic tool to help diagnose certain medical conditions. For example, high levels of histidine in the blood can be a sign of a genetic disorder called histidinemia, which can cause a range of symptoms including intellectual disability, seizures, and liver problems. Histidine is also used in the treatment of certain medical conditions, such as acidosis, which is a condition in which the body's pH balance is disrupted.

Transcription factors are proteins that regulate gene expression by binding to specific DNA sequences and controlling the transcription of genetic information from DNA to RNA. They play a crucial role in the development and function of cells and tissues in the body. In the medical field, transcription factors are often studied as potential targets for the treatment of diseases such as cancer, where their activity is often dysregulated. For example, some transcription factors are overexpressed in certain types of cancer cells, and inhibiting their activity may help to slow or stop the growth of these cells. Transcription factors are also important in the development of stem cells, which have the ability to differentiate into a wide variety of cell types. By understanding how transcription factors regulate gene expression in stem cells, researchers may be able to develop new therapies for diseases such as diabetes and heart disease. Overall, transcription factors are a critical component of gene regulation and have important implications for the development and treatment of many diseases.

Tosylphenylalanyl Chloromethyl Ketone (TPCK) is a chemical compound that is commonly used in the medical field as a protease inhibitor. It is a synthetic compound that is structurally similar to the amino acid phenylalanine, and it works by blocking the activity of proteases, which are enzymes that break down proteins. TPCK is often used in research to study the function of proteases and to investigate the role of proteases in various diseases. It is also used in some laboratory assays to measure the activity of proteases. In addition to its use in research, TPCK has been studied for its potential therapeutic applications. Some studies have suggested that TPCK may have anti-inflammatory and anti-cancer effects, and it has been investigated as a potential treatment for a variety of conditions, including inflammatory bowel disease, cancer, and neurodegenerative diseases. However, more research is needed to fully understand the potential therapeutic uses of TPCK.

Chymases are a type of protease enzyme that are produced by mast cells and basophils. They are involved in the degradation of proteins and play a role in the inflammatory response. There are several different chymases, including chymotrypsin-like chymases and tryptase-like chymases, which have different substrate specificities and functions. In the medical field, chymases are often studied in the context of allergic reactions and inflammatory diseases, as they are involved in the release of inflammatory mediators and the activation of immune cells. They are also being investigated as potential therapeutic targets for the treatment of these conditions.

Periplasmic proteins are proteins that are located in the periplasmic space of bacteria, which is the region between the inner cytoplasmic membrane and the outer cell wall. The periplasmic space is a dynamic environment that plays a crucial role in various cellular processes, including nutrient uptake, cell division, and stress response. Periplasmic proteins are involved in a wide range of functions, including transport of nutrients and other molecules across the outer membrane, sensing environmental changes, and participating in the immune response. Some periplasmic proteins are also involved in pathogenicity, as they can contribute to the ability of bacteria to colonize and infect host cells. In the medical field, periplasmic proteins are of interest because they can serve as potential targets for the development of new antibiotics and other therapeutic agents. Additionally, understanding the function of periplasmic proteins can provide insights into the biology of bacteria and their interactions with the host, which can inform the development of new strategies for the prevention and treatment of bacterial infections.

Carboxylic ester hydrolases are a group of enzymes that catalyze the hydrolysis of carboxylic ester bonds. These enzymes are involved in a variety of biological processes, including the breakdown of fats and cholesterol in the body, the metabolism of drugs and toxins, and the regulation of hormone levels. In the medical field, carboxylic ester hydrolases are often studied in the context of diseases related to lipid metabolism, such as obesity, diabetes, and cardiovascular disease. They are also important in the development of new drugs and therapies for these conditions, as well as for the treatment of other diseases that involve the metabolism of lipids and other molecules. Carboxylic ester hydrolases are classified into several different families based on their structure and function. Some of the most well-known families include the lipases, esterases, and amidases. Each family has its own specific set of substrates and catalytic mechanisms, and they are often regulated by different factors, such as hormones, enzymes, and cellular signaling pathways.

In the medical field, "trans-activators" refer to proteins or molecules that activate the transcription of a gene, which is the process by which the information in a gene is used to produce a functional product, such as a protein. Trans-activators can bind to specific DNA sequences near a gene and recruit other proteins, such as RNA polymerase, to initiate transcription. They can also modify the chromatin structure around a gene to make it more accessible to transcription machinery. Trans-activators play important roles in regulating gene expression and are involved in many biological processes, including development, differentiation, and disease.

Carbohydrate dehydrogenases are a group of enzymes that catalyze the oxidation of carbohydrates, such as glucose, fructose, and galactose, to produce aldehydes or ketones. These enzymes play important roles in various metabolic pathways, including glycolysis, the citric acid cycle, and the pentose phosphate pathway. There are several types of carbohydrate dehydrogenases, including glucose dehydrogenase, lactate dehydrogenase, and alcohol dehydrogenase. These enzymes are found in a variety of tissues, including the liver, muscle, and brain, and are involved in a range of physiological processes, such as energy metabolism, detoxification, and the synthesis of important molecules like nucleotides and amino acids. In the medical field, carbohydrate dehydrogenases are often used as diagnostic markers for various diseases and conditions. For example, elevated levels of lactate dehydrogenase in the blood can be an indicator of liver or muscle damage, while elevated levels of glucose dehydrogenase can be a sign of certain types of cancer or genetic disorders. Additionally, some carbohydrate dehydrogenases are used as targets for the development of new drugs and therapies.

In the medical field, "Complement C1s" refers to a specific protein component of the complement system, which is a group of proteins that play a crucial role in the immune system's defense against infections and other harmful substances. The complement system is activated when pathogens or damaged cells are present in the body, and it works by forming a membrane attack complex (MAC) that can directly destroy the pathogen or infected cell. Complement C1s is one of the first proteins to be activated in the complement cascade, and it helps to initiate the formation of the MAC. Complement C1s is typically measured in blood tests as a way to assess the overall function of the complement system and to diagnose or monitor certain medical conditions, such as autoimmune disorders, infections, and certain types of cancer. Abnormal levels of complement C1s can indicate problems with the complement system, which may require further investigation and treatment.

Fibrinolysin is a type of enzyme that breaks down fibrin, a protein that forms blood clots. It is produced by various types of white blood cells, including neutrophils and macrophages, and is also found in some bacteria and fungi. In the medical field, fibrinolysin is used to treat a variety of conditions that involve abnormal blood clotting, such as deep vein thrombosis, pulmonary embolism, and stroke. It works by breaking down the fibrin in the blood clot, allowing the clot to be dissolved and removed from the body. Fibrinolysin is available as a medication, usually in the form of a solution that is injected into a vein. It is typically used in combination with other medications, such as anticoagulants, to prevent the formation of new blood clots. However, fibrinolysin can also have side effects, including bleeding, allergic reactions, and damage to surrounding tissues. Therefore, it is typically used only in cases where the benefits of treatment outweigh the risks.

Glutathione transferase (GST) is an enzyme that plays a crucial role in the detoxification of various harmful substances in the body, including drugs, toxins, and carcinogens. It is a member of a large family of enzymes that are found in all living organisms and are involved in a wide range of biological processes, including metabolism, cell signaling, and immune response. In the medical field, GST is often studied in relation to various diseases and conditions, including cancer, liver disease, and neurodegenerative disorders. GST enzymes are also used as biomarkers for exposure to environmental toxins and as targets for the development of new drugs for the treatment of these conditions. Overall, GST is an important enzyme that helps to protect the body from harmful substances and plays a critical role in maintaining overall health and well-being.

Tetradecanoylphorbol acetate (TPA) is a synthetic compound that belongs to a class of chemicals called phorbol esters. It is a potent tumor promoter and has been used in research to study the mechanisms of cancer development and progression. TPA works by activating protein kinase C (PKC), a family of enzymes that play a key role in cell signaling and proliferation. When TPA binds to a specific receptor on the cell surface, it triggers a cascade of events that leads to the activation of PKC, which in turn promotes cell growth and division. TPA has been shown to promote the growth of tumors in animal models and has been linked to the development of certain types of cancer in humans, including skin cancer and breast cancer. It is also used in some experimental treatments for cancer, although its use is limited due to its potential toxicity and side effects.

In the medical field, "Antipain" is a brand name for a medication that contains the active ingredient acetaminophen (also known as paracetamol). Acetaminophen is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain and reduce fever. It works by blocking the production of prostaglandins, which are chemicals that cause inflammation, pain, and fever. Antipain is available in various forms, including tablets, capsules, and liquid, and is typically prescribed for the relief of mild to moderate pain, such as headaches, toothaches, and menstrual cramps. It is also commonly used to reduce fever. However, it is important to note that acetaminophen can cause liver damage if taken in high doses or for extended periods of time, so it is important to follow the recommended dosage instructions and consult with a healthcare provider if you have any questions or concerns.

Phosphotyrosine is a chemical modification of the amino acid tyrosine, in which a phosphate group is added to the side chain of the tyrosine residue. This modification is important in cell signaling and is often used as a marker for the activation of signaling pathways in cells. Phosphotyrosine is typically detected using techniques such as immunoblotting or mass spectrometry. In the medical field, the presence or absence of phosphotyrosine on specific proteins can be used as a diagnostic or prognostic marker for various diseases, including cancer.

Cell cycle proteins are a group of proteins that play a crucial role in regulating the progression of the cell cycle. The cell cycle is a series of events that a cell goes through in order to divide and produce two daughter cells. It consists of four main phases: G1 (Gap 1), S (Synthesis), G2 (Gap 2), and M (Mitosis). Cell cycle proteins are involved in regulating the progression of each phase of the cell cycle, ensuring that the cell divides correctly and that the daughter cells have the correct number of chromosomes. Some of the key cell cycle proteins include cyclins, cyclin-dependent kinases (CDKs), and checkpoint proteins. Cyclins are proteins that are synthesized and degraded in a cyclic manner throughout the cell cycle. They bind to CDKs, which are enzymes that regulate cell cycle progression by phosphorylating target proteins. The activity of CDKs is tightly regulated by cyclins, ensuring that the cell cycle progresses in a controlled manner. Checkpoint proteins are proteins that monitor the cell cycle and ensure that the cell does not proceed to the next phase until all the necessary conditions are met. If any errors are detected, checkpoint proteins can halt the cell cycle and activate repair mechanisms to correct the problem. Overall, cell cycle proteins play a critical role in maintaining the integrity of the cell cycle and ensuring that cells divide correctly. Disruptions in the regulation of cell cycle proteins can lead to a variety of diseases, including cancer.

Serpin E2, also known as AAT (alpha-1 antitrypsin), is a protein that belongs to the serine protease inhibitor (serpin) family. It is primarily produced by the liver and secreted into the bloodstream, where it acts as a protease inhibitor, preventing the action of proteases such as elastase and neutrophil elastase. In the medical field, Serpin E2 is particularly important because it plays a crucial role in protecting the lungs from damage caused by inflammation and infection. A deficiency in Serpin E2, which can occur due to genetic mutations, can lead to a condition called alpha-1 antitrypsin deficiency (AATD). This condition is characterized by the accumulation of abnormal forms of Serpin E2 in the liver and lungs, which can cause lung damage and increase the risk of developing chronic obstructive pulmonary disease (COPD) and emphysema. In addition to its role in protecting the lungs, Serpin E2 has also been implicated in other biological processes, including the regulation of inflammation, the metabolism of lipids, and the maintenance of bone density.

Methionine is an essential amino acid that plays a crucial role in various biological processes in the human body. It is a sulfur-containing amino acid that is involved in the metabolism of proteins, the synthesis of important molecules such as carnitine and choline, and the detoxification of harmful substances in the liver. In the medical field, methionine is often used as a dietary supplement to support liver function and to treat certain medical conditions. For example, methionine is sometimes used to treat liver disease, such as non-alcoholic fatty liver disease (NAFLD) and hepatitis C, as it can help to reduce liver inflammation and improve liver function. Methionine is also used in the treatment of certain types of cancer, such as breast cancer and prostate cancer, as it can help to slow the growth of cancer cells and reduce the risk of tumor formation. In addition, methionine is sometimes used in the treatment of certain neurological disorders, such as Alzheimer's disease and Parkinson's disease, as it can help to improve cognitive function and reduce the risk of neurodegeneration. Overall, methionine is an important nutrient that plays a vital role in many aspects of human health, and its use in the medical field is an important area of ongoing research and development.

Phosphatidylinositol 3-kinases (PI3Ks) are a family of enzymes that play a critical role in cellular signaling pathways. They are involved in a wide range of cellular processes, including cell growth, proliferation, differentiation, survival, migration, and metabolism. PI3Ks are activated by various extracellular signals, such as growth factors, hormones, and neurotransmitters, and they generate second messengers by phosphorylating phosphatidylinositol lipids on the inner leaflet of the plasma membrane. This leads to the recruitment and activation of downstream effector molecules, such as protein kinases and phosphatases, which regulate various cellular processes. Dysregulation of PI3K signaling has been implicated in the development of various diseases, including cancer, diabetes, and neurological disorders. Therefore, PI3Ks are important targets for the development of therapeutic agents for these diseases.

Cysteine synthase is an enzyme that plays a crucial role in the biosynthesis of the amino acid cysteine. It catalyzes the condensation of serine and homocysteine to form cystathionine, which is then converted to cysteine by the enzyme cystathionine beta-synthase. Cysteine is an essential amino acid that is required for the synthesis of proteins, antioxidants, and other important molecules in the body. Deficiency in cysteine synthase activity can lead to a rare genetic disorder called cystathionine beta-synthase deficiency, which can cause a range of symptoms including intellectual disability, seizures, and problems with growth and development.

Intracellular signaling peptides and proteins are molecules that are involved in transmitting signals within cells. These molecules can be either proteins or peptides, and they play a crucial role in regulating various cellular processes, such as cell growth, differentiation, and apoptosis. Intracellular signaling peptides and proteins can be activated by a variety of stimuli, including hormones, growth factors, and neurotransmitters. Once activated, they initiate a cascade of intracellular events that ultimately lead to a specific cellular response. There are many different types of intracellular signaling peptides and proteins, and they can be classified based on their structure, function, and the signaling pathway they are involved in. Some examples of intracellular signaling peptides and proteins include growth factors, cytokines, kinases, phosphatases, and G-proteins. In the medical field, understanding the role of intracellular signaling peptides and proteins is important for developing new treatments for a wide range of diseases, including cancer, diabetes, and neurological disorders.

Affinity chromatography is a type of chromatography that is used to separate and purify proteins or other biomolecules based on their specific interactions with a ligand that is immobilized on a solid support. The ligand is typically a molecule that has a high affinity for the biomolecule of interest, such as an antibody or a specific protein. When a mixture of biomolecules is passed through the column, the biomolecules that interact strongly with the ligand will be retained on the column, while those that do not interact or interact weakly will pass through the column. The retained biomolecules can then be eluted from the column using a solution that disrupts the interaction between the biomolecule and the ligand. Affinity chromatography is a powerful tool for purifying and characterizing proteins and other biomolecules, and it is widely used in the fields of biochemistry, molecular biology, and biotechnology.

Complement C1r is a protein that plays a role in the complement system, which is a part of the immune system that helps to defend the body against infections. The complement system is made up of a series of proteins that work together to identify and destroy foreign substances, such as bacteria and viruses. C1r is one of several proteins that make up the first step in the complement system, known as the classical pathway. When C1r is activated, it cleaves another protein called C1s, which then cleaves a third protein called C4. This cleavage event triggers a cascade of reactions that ultimately leads to the destruction of the foreign substance. Complement C1r is encoded by the "C1R" gene, which is located on chromosome 19 in humans. Mutations in the "C1R" gene can lead to a deficiency in C1r, which can result in a weakened immune system and an increased susceptibility to infections.

Lysine is an essential amino acid that is required for the growth and maintenance of tissues in the human body. It is one of the nine essential amino acids that cannot be synthesized by the body and must be obtained through the diet. Lysine plays a crucial role in the production of proteins, including enzymes, hormones, and antibodies. It is also involved in the absorption of calcium and the production of niacin, a B vitamin that is important for energy metabolism and the prevention of pellagra. In the medical field, lysine is used to treat and prevent various conditions, including: 1. Herpes simplex virus (HSV): Lysine supplements have been shown to reduce the frequency and severity of outbreaks of HSV-1 and HSV-2, which cause cold sores and genital herpes, respectively. 2. Cold sores: Lysine supplements can help reduce the frequency and severity of cold sore outbreaks by inhibiting the replication of the herpes simplex virus. 3. Depression: Lysine has been shown to increase levels of serotonin, a neurotransmitter that regulates mood, in the brain. 4. Hair loss: Lysine is important for the production of hair, and deficiency in lysine has been linked to hair loss. 5. Wound healing: Lysine is involved in the production of collagen, a protein that is important for wound healing. Overall, lysine is an important nutrient that plays a crucial role in many aspects of human health and is used in the treatment and prevention of various medical conditions.

Cytosol is the fluid inside the cytoplasm of a cell, which is the gel-like substance that fills the cell membrane. It is also known as the cytoplasmic matrix or cytosolic matrix. The cytosol is a complex mixture of water, ions, organic molecules, and various enzymes and other proteins that play important roles in cellular metabolism, signaling, and transport. It is the site of many cellular processes, including protein synthesis, energy production, and waste removal. The cytosol is also the site of many cellular organelles, such as the mitochondria, ribosomes, and endoplasmic reticulum, which are responsible for carrying out specific cellular functions.

Tetrahydrofolates (THF) are a group of compounds that play a crucial role in the metabolism of nucleic acids, amino acids, and one-carbon units in the body. THF is a coenzyme that is involved in the transfer of one-carbon units, which are essential for the synthesis of DNA, RNA, and proteins. There are several forms of THF, including tetrahydrofolate, methyltetrahydrofolate, and 5-methyltetrahydrofolate. These forms of THF differ in the number and location of methyl groups attached to the pteridine ring, which is the central structure of the THF molecule. In the medical field, THF deficiency can lead to a range of health problems, including anemia, megaloblastic anemia, and neural tube defects. THF is also used as a dietary supplement and in the treatment of certain medical conditions, such as depression and homocystinuria.

Acyltransferases are a class of enzymes that catalyze the transfer of an acyl group from one molecule to another. In the medical field, acyltransferases play important roles in various metabolic pathways, including fatty acid metabolism, cholesterol metabolism, and drug metabolism. One example of an acyltransferase enzyme is acetyl-CoA carboxylase, which is involved in the synthesis of fatty acids. This enzyme catalyzes the transfer of a carboxyl group from bicarbonate to acetyl-CoA, producing malonyl-CoA. Malonyl-CoA is then used as a substrate for fatty acid synthesis. Another example of an acyltransferase enzyme is the cholesterol biosynthesis enzyme HMG-CoA reductase. This enzyme catalyzes the transfer of a hydrogen atom from NADPH to HMG-CoA, producing mevalonate. Mevalonate is then used as a substrate for the synthesis of cholesterol. In the field of drug metabolism, acyltransferases are involved in the metabolism of many drugs. For example, the cytochrome P450 enzyme CYP2C9 is an acyltransferase that is involved in the metabolism of several drugs, including warfarin and diazepam. Overall, acyltransferases play important roles in various metabolic pathways and are important targets for the development of new drugs and therapies.

Receptor, PAR-2 is a protein that acts as a receptor for a family of proteases called protease-activated receptors (PARs). PAR-2 is expressed on various cells in the body, including immune cells, endothelial cells, and smooth muscle cells. Activation of PAR-2 by proteases, such as trypsin or thrombin, leads to a cascade of intracellular signaling events that can result in a variety of physiological responses, including inflammation, pain, and angiogenesis. PAR-2 has been implicated in a number of diseases, including inflammatory bowel disease, cancer, and cardiovascular disease, and is therefore a potential target for therapeutic intervention.

Caseins are a group of proteins found in milk and other dairy products. They are the major protein component of milk and are responsible for its thick, creamy texture. There are four main types of caseins: alpha-casein, beta-casein, kappa-casein, and omega-casein. These proteins are important for the nutritional value of milk and are also used in the production of cheese and other dairy products. In the medical field, caseins have been studied for their potential health benefits, including their ability to promote bone health and reduce the risk of certain diseases. However, more research is needed to fully understand the effects of caseins on human health.

Myeloblastin, also known as azurocidin, is a protein that is produced by myeloid cells, which are a type of white blood cell. It is a member of the cathelicidin family of antimicrobial peptides, which are small proteins that play a role in the body's immune response by helping to protect against bacterial and fungal infections. Myeloblastin is produced by immature myeloid cells, such as myeloblasts and promyelocytes, which are precursors to mature white blood cells. It is thought to play a role in the differentiation and maturation of these cells, as well as in the regulation of the immune response. In the medical field, myeloblastin is sometimes used as a diagnostic marker for certain types of blood disorders, such as acute myeloid leukemia (AML), in which the production of myeloblasts is abnormal. It is also being studied as a potential therapeutic agent for the treatment of AML and other types of cancer.

Leucine is an essential amino acid that plays a crucial role in various biological processes in the human body. It is one of the nine essential amino acids that cannot be synthesized by the body and must be obtained through the diet. In the medical field, leucine is often used as a dietary supplement to promote muscle growth and recovery, particularly in athletes and bodybuilders. It is also used to treat certain medical conditions, such as phenylketonuria (PKU), a genetic disorder that affects the metabolism of amino acids. Leucine has been shown to have various physiological effects, including increasing protein synthesis, stimulating muscle growth, and improving insulin sensitivity. It is also involved in the regulation of gene expression and the production of neurotransmitters. However, excessive consumption of leucine can have negative effects on health, such as liver damage and increased risk of certain cancers. Therefore, it is important to consume leucine in moderation and as part of a balanced diet.

Phosphatidylserines (PS) are a type of phospholipid that are important components of cell membranes. They are composed of a glycerol backbone, two fatty acid chains, and a phosphate group, with a serine residue attached to the phosphate group. In the medical field, PS is often studied for its potential health benefits, particularly in relation to cognitive function and aging. Some research suggests that PS supplements may improve memory and cognitive function in older adults, and may also have anti-inflammatory and anti-aging effects. However, more research is needed to fully understand the potential benefits and risks of PS supplementation.

In the medical field, macromolecular substances refer to large molecules that are composed of repeating units, such as proteins, carbohydrates, lipids, and nucleic acids. These molecules are essential for many biological processes, including cell signaling, metabolism, and structural support. Macromolecular substances are typically composed of thousands or even millions of atoms, and they can range in size from a few nanometers to several micrometers. They are often found in the form of fibers, sheets, or other complex structures, and they can be found in a variety of biological tissues and fluids. Examples of macromolecular substances in the medical field include: - Proteins: These are large molecules composed of amino acids that are involved in a wide range of biological functions, including enzyme catalysis, structural support, and immune response. - Carbohydrates: These are molecules composed of carbon, hydrogen, and oxygen atoms that are involved in energy storage, cell signaling, and structural support. - Lipids: These are molecules composed of fatty acids and glycerol that are involved in energy storage, cell membrane structure, and signaling. - Nucleic acids: These are molecules composed of nucleotides that are involved in genetic information storage and transfer. Macromolecular substances are important for many medical applications, including drug delivery, tissue engineering, and gene therapy. Understanding the structure and function of these molecules is essential for developing new treatments and therapies for a wide range of diseases and conditions.

Protein isoforms refer to different forms of a protein that are produced by alternative splicing of the same gene. Alternative splicing is a process by which different combinations of exons (coding regions) are selected from the pre-mRNA transcript of a gene, resulting in the production of different protein isoforms with slightly different amino acid sequences. Protein isoforms can have different functions, localization, and stability, and can play distinct roles in cellular processes. For example, the same gene may produce a protein isoform that is expressed in the nucleus and another isoform that is expressed in the cytoplasm. Alternatively, different isoforms of the same protein may have different substrate specificity or binding affinity for other molecules. Dysregulation of alternative splicing can lead to the production of abnormal protein isoforms, which can contribute to the development of various diseases, including cancer, neurological disorders, and cardiovascular diseases. Therefore, understanding the mechanisms of alternative splicing and the functional consequences of protein isoforms is an important area of research in the medical field.

Saccharomyces cerevisiae proteins are proteins that are produced by the yeast species Saccharomyces cerevisiae. This yeast is commonly used in the production of bread, beer, and wine, as well as in scientific research. In the medical field, S. cerevisiae proteins have been studied for their potential use in the treatment of various diseases, including cancer, diabetes, and neurodegenerative disorders. Some S. cerevisiae proteins have also been shown to have anti-inflammatory and immunomodulatory effects, making them of interest for the development of new therapies.

Cysteine endopeptidases are a class of enzymes that cleave peptide bonds within proteins, specifically at the carboxyl side of a cysteine residue. These enzymes are involved in a variety of biological processes, including digestion, blood clotting, and the regulation of immune responses. They are also involved in the degradation of extracellular matrix proteins, which is important for tissue remodeling and repair. In the medical field, cysteine endopeptidases are often studied as potential therapeutic targets for diseases such as cancer, inflammatory disorders, and neurodegenerative diseases.

Viral nonstructural proteins (NSPs) are proteins that are not part of the viral capsid or envelope, but are instead synthesized by the virus after it has entered a host cell. These proteins play important roles in the replication and assembly of the virus, as well as in evading the host immune system. NSPs can be classified into several functional groups, including proteases, helicases, polymerases, and methyltransferases. For example, the NSP1 protein of the influenza virus is a protease that cleaves host cell proteins to create a favorable environment for viral replication. The NSP3 protein of the hepatitis C virus is a helicase that unwinds the viral RNA genome to allow for transcription and replication. NSPs can also be targeted by antiviral drugs, as they are often essential for viral replication. For example, the protease inhibitors used to treat HIV target the viral protease enzyme, which is an NSP. Similarly, the NS5B polymerase inhibitors used to treat hepatitis C target the viral polymerase enzyme, which is also an NSP. Overall, NSPs play important roles in the life cycle of viruses and are an important target for antiviral therapy.

Trypsin Inhibitor, Kunitz Soybean (TIK) is a type of protein found in soybeans that inhibits the activity of trypsin, an enzyme that plays a key role in the digestion of proteins. TIK is classified as a Kunitz-type trypsin inhibitor, which is a family of proteins that share a similar structure and mechanism of action. TIK is known to have anti-inflammatory and anti-cancer properties, and has been studied for its potential therapeutic applications in various diseases. For example, TIK has been shown to inhibit the growth of certain types of cancer cells, including breast, prostate, and colon cancer. It has also been shown to reduce inflammation and oxidative stress, which are key factors in the development of many chronic diseases. In the medical field, TIK is being investigated as a potential therapeutic agent for a variety of conditions, including cancer, inflammatory diseases, and cardiovascular disease. However, more research is needed to fully understand the potential benefits and risks of TIK, and to determine the optimal dosage and administration route for its use in clinical settings.

Insulin is a hormone produced by the pancreas that regulates the amount of glucose (sugar) in the bloodstream. It helps the body's cells absorb glucose from the bloodstream and use it for energy or store it for later use. Insulin is essential for maintaining normal blood sugar levels and preventing conditions such as diabetes. In the medical field, insulin is used to treat diabetes and other conditions related to high blood sugar levels. It is typically administered through injections or an insulin pump.

The complement pathway, mannose-binding lectin (MBL) is a part of the innate immune system that helps to defend the body against infections. It is a complex protein that recognizes and binds to specific carbohydrates on the surface of microorganisms, such as bacteria and viruses. When MBL binds to these carbohydrates, it triggers a cascade of chemical reactions that ultimately leads to the destruction of the microorganism. The complement pathway, MBL is an important part of the body's defense against infections and plays a role in the development of certain autoimmune diseases.

D-Serine, synthesized in neurons by serine racemase from L-serine (its enantiomer), serves as a neuromodulator by coactivating ... Serine hydroxymethyltransferase (SHMT = serine transhydroxymethylase) also catalyzes the reversible conversions of L-serine to ... Pure D-serine is an off-white crystalline powder with a very faint musty aroma. D-Serine is sweet with an additional minor sour ... D-Serine is being studied in rodents as a potential treatment for schizophrenia. D-Serine also has been described as a ...
This enzyme converts L-serine to its enantiomer form, D-serine. D-serine acts as a neuronal signaling molecule by activating ... In humans, the serine racemase protein is encoded by the SRR gene. Serine racemase may have evolved from L-thre- ... Mammalian serine racemase is a pyridoxal 5'-phosphate dependent enzyme that catalyzes both the racemization of L-serine to D- ... serine and also the elimination of water from L-serine, generating pyruvate and ammonia through the β-elimination of L-serine. ...
Once the serine is bonded to PLP, PLP triggers the α-elimination of the hydroxymethyl group of the substrate (serine). This ... Serine hydroxymethyltransferase (SHMT) is a pyridoxal phosphate (PLP) (Vitamin B6) dependent enzyme (EC 2.1.2.1) which plays an ... However, THF is not an obligate substrate for SHMT, meaning the cleavage of serine and other β-hydroxy amino acids (such as ... Serine+Hydroxymethyltransferase at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Portal: Biology (EC ...
Unlike other, non-catalytic, serines, the reactive serine of these hydrolases is typically activated by a proton relay ... Superfamilies of serine hydrolases includes: Serine proteases, including trypsin, chymotrypsin, and subtilisin Extracellular ... Serine hydrolases are one of the largest known enzyme classes comprising approximately ~200 enzymes or 1% of the genes in the ... A defining characteristic of these enzymes is the presence of a particular serine at the active site, which is used for the ...
L-serine ammonia-lyase Serine deaminase L-hydroxyaminoacid dehydratase L-serine deaminase L-serine dehydratase L-serine hydro- ... Serine dehydratase or L-serine ammonia lyase (SDH) is in the β-family of pyridoxal phosphate-dependent (PLP) enzymes. SDH is ... Rowsell EV, Carnie JA, Wahbi SD, Al-Tai AH, Rowsell KV (1979). "L-serine dehydratase and L-serine-pyruvate aminotransferase ... Glycine can be converted into serine and either become pyruvate via serine dehydratase or undergo oxidative cleavage into ...
... s (or serine endopeptidases) are enzymes that cleave peptide bonds in proteins. Serine serves as the ... Serine Peptidase Serine Proteases site at Saint Louis University (SLU) Serine+proteases at the U.S. National Library of ... The serine -OH attacks the carbonyl carbon, and the nitrogen of the histidine accepts the hydrogen from the -OH of the [serine ... Serine proteases are paired with serine protease inhibitors, which turn off their activity when they are no longer needed.[self ...
Other names in common use include SATase, L-serine acetyltransferase, serine acetyltransferase, and serine transacetylase. This ... Smith IK, Thompson JF (1971). "Purification and characterization of L-serine transacetylase and O-acetyl-L-serine sulfhydrylase ... O-acetyl-L-serine Thus, the two substrates of this enzyme are acetyl-CoA and L-serine, whereas its two products are CoA and O- ... In enzymology, a serine O-acetyltransferase (EC 2.3.1.30) is an enzyme that catalyzes the chemical reaction acetyl-CoA + L- ...
a 200-274-3 EINECS for Serine ^a CID 617 from PubChem ^a CID 5951 from PubChem (Articles with short description, Short ...
... serine palmitoyltransferase, SPT, 3-oxosphinganine synthetase, and acyl-CoA:serine C-2 acyltransferase decarboxylating. Serine ... Serine C-palmitoyltransferase is expressed in a large number of species from bacteria to humans. The bacterial enzyme is a ... In enzymology, a serine C-palmitoyltransferase (EC 2.3.1.50) is an enzyme that catalyzes the chemical reaction: palmitoyl-CoA ... Gable K, Slife H, Bacikova D, Monaghan E, Dunn TM (March 2000). "Tsc3p is an 80-amino acid protein associated with serine ...
In enzymology, a serine 2-dehydrogenase (EC 1.4.1.7) is an enzyme that catalyzes the chemical reaction L-serine + H2O + NAD+ ... Other names in common use include L-serine:NAD+ oxidoreductase (deaminating), and serine dehydrogenase. Kretovich VL, ... The systematic name of this enzyme class is L-serine:NAD+ 2-oxidoreductase (deaminating). ... displaystyle \rightleftharpoons } 3-hydroxypyruvate + NH3 + NADH + H+ The 3 substrates of this enzyme are L-serine, H2O, and ...
... may refer to: Serine dehydratase, an enzyme Threonine ammonia-lyase, an enzyme This set index page lists ...
In enzymology, a serine 3-dehydrogenase (EC 1.1.1.276) is an enzyme that catalyzes the chemical reaction L-serine + NADP+ ⇌ {\ ... The systematic name of this enzyme class is L-serine:NADP+ 3-oxidoreductase. Fujisawa H, Nagata S, Chowdhury EK, Matsumoto M, ... Chowdhury EK, Higuchi K, Nagata S, Misono H (1997). "A novel NADP(+)-dependent serine dehydrogenase from Agrobacterium ... the two substrates of this enzyme are L-serine and NADP+, whereas its 3 products are 2-ammoniomalonate semialdehyde, NADPH, and ...
In enzymology, a serine-pyruvate transaminase (EC 2.6.1.51) is an enzyme that catalyzes the chemical reaction L-serine + ... The systematic name of this enzyme class is L-serine:pyruvate aminotransferase. Other names in common use include SPT, and ... Sallach HJ (1956). "Formation of serine from hydroxypyruvate and L-alanine". J. Biol. Chem. 223: 1101-1108. Portal: Biology v t ... This enzyme participates in glycine, serine and threonine metabolism. It employs one cofactor, pyridoxal phosphate. As of late ...
In enzymology, a serine-tRNA ligase (EC 6.1.1.11) is an enzyme that catalyzes the chemical reaction ATP + L-serine + tRNASer ... and serine translase. This enzyme participates in glycine, serine and threonine metabolism and aminoacyl-trna biosynthesis. As ... The systematic name of this enzyme class is L-serine:tRNASer ligase (AMP-forming). Other names in common use include seryl-tRNA ... Ohama T, Yang DC, Hatfield DL (1994). "Selenocysteine tRNA and serine tRNA are aminoacylated by the same synthetase, but may ...
Other names in common use include serine ethanolamine phosphate synthetase, serine ethanolamine phosphodiester synthase, serine ... L-serine-phosphoethanolamine Thus, the two substrates of this enzyme are CDP-ethanolamine and L-serine, whereas its two ... In enzymology, a serine-phosphoethanolamine synthase (EC 2.7.8.4) is an enzyme that catalyzes the chemical reaction CDP- ... Allen AK, Rosenberg H (1968). "The mechanism of action and some properties of serine ethanolamine phosphate synthetase". ...
The enzyme serine-ethanolaminephosphate phosphodiesterase (EC 3.1.4.13) catalyzes the reaction serine phosphoethanolamine + H2O ... The systematic name is serine-phosphoethanolamine ethanolaminephosphohydrolase. Other names in common use include serine ... Hagerman DD, Rosenberg H, Ennor AH, Schiff P, Inoue S (1965). "The isolation and properties of chicken kidney serine ... displaystyle \rightleftharpoons } serine + ethanolamine phosphate This enzyme belongs to the family of hydrolases, specifically ...
The Serine octamer cluster in physical chemistry is an unusually stable cluster consisting of eight serine molecules (Ser) ... A racemic serine solution produces a minimum amount of cluster and with solutions of both enantiomers a maximum amount is ... The same octamer ions are also produced by rapid evaporation of a serine solution on a hot (200-250 °C) metal surface or by ... A cycle can be maintained in which each turn results in an incremental enrichment in L-serine. Many such cycles eventually ...
Other names in common use include pyrophosphate-serine phosphotransferase, and pyrophosphate-L-serine phosphotransferase. Cagen ... O-phospho-L-serine Thus, the two substrates of this enzyme are diphosphate and L-serine, whereas its two products are phosphate ... In enzymology, a diphosphate-serine phosphotransferase (EC 2.7.1.80) is an enzyme that catalyzes the chemical reaction ... The systematic name of this enzyme class is diphosphate:L-serine O-phosphotransferase. ...
... is an enzyme that in humans is encoded by the SHMT2 gene. GRCh38: Ensembl release 89: ...
D-serine Hence, this enzyme has one substrate, [protein]-L-serine, and one product, [protein]-D-serine. This enzyme belongs to ... The systematic name of this enzyme class is [protein]-serine epimerase. This enzyme is also called protein-serine racemase. As ... In enzymology, a protein-serine epimerase (EC 5.1.1.16) is an enzyme that catalyzes the chemical reaction [protein]-L-serine ...
... is a protein that in humans is encoded by the PRSS57 gene. This gene encodes an arginine-specific serine ... "Entrez Gene: Serine protease 57". Retrieved 2018-08-19. Perera NC, Wiesmüller KH, Larsen MT, Schacher B, Eickholz P, Borregaard ...
In enzymology, a serine-glyoxylate transaminase (EC 2.6.1.45) is an enzyme that catalyzes the chemical reaction L-serine + ... The systematic name of this enzyme class is L-serine:glyoxylate aminotransferase. This enzyme participates in glycine, serine ... Smith IK (1973). "Purification and characterization of serine:glyoxylate aminotransferase from kidney bean (Phaseolus vulgaris ... the two substrates of this enzyme are L-serine and glyoxylate, whereas its two products are 3-hydroxypyruvate and glycine. This ...
... (EC 2.7.8.29, phosphatidylserine synthase 2, serine-exchange enzyme ... L-serine-phosphatidylethanolamine+phosphatidyltransferase at the U.S. National Library of Medicine Medical Subject Headings ( ... This enzyme catalyses the following chemical reaction L-1-phosphatidylethanolamine + L-serine ⇌ {\displaystyle \ ... ethanolamine This enzyme catalyses replacement of a polar head group of phosphatidylethanolamine with L-serine. Stone SJ, Vance ...
... where the X in the sequence preferably is a Proline or Serine; the Y = Threonine, Serine or Alanine; and Z preferably is ... IgA-specific+serine+endopeptidase at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Portal: Biology ( ... IgA protease (EC 3.4.21.72, IgA-specific serine endopeptidase, IgA proteinase, IgA-specific proteinase, immunoglobulin A ...
Equine+arterivirus+serine+peptidase at the U.S. National Library of Medicine Medical Subject Headings (MeSH) Portal: Biology v ... Equine arterivirus serine peptidase (EC 3.4.21.114) is an enzyme. This enzyme catalyses the following chemical reaction ... the 3C-like serine proteases". The Journal of Biological Chemistry. 271 (9): 4864-71. doi:10.1074/jbc.271.9.4864. PMID 8617757 ... "Proteolytic processing of the open reading frame 1b-encoded part of arterivirus replicase is mediated by nsp4 serine protease ...
D-serine hydrolase, D-serine dehydratase (deaminating), D-serine deaminase, and D-serine hydro-lyase (deaminating). This enzyme ... The enzyme D-serine ammonia-lyase (EC 4.3.1.18), with systematic name D-serine ammonia-lyase (pyruvate-forming), catalyzes the ... METZLER DE, SNELL EE (1952). "Deamination of serine. II. D-Serine dehydrase, a vitamin B6 enzyme from Escherichia coli". J. ... Dupourque D, Newton WA, Snell EE (1966). "Purification and properties of D-serine dehydrase from Escherichia coli". J. Biol. ...
Protein HtrA2, also known as Omi, is a mitochondrially-located serine protease. The human protein Serine protease HTRA2, ... Serine protease HTRA2, mitochondrial is an enzyme that in humans is encoded by the HTRA2 gene. This protein is involved in ... HtrA serine peptidase 2 has been shown to interact with MAPK14, XIAP and BIRC2. GRCh38: Ensembl release 89: ENSG00000115317 - ... "Entrez Gene: HTRA2 HtrA serine peptidase 2". Jones JM, Datta P, Srinivasula SM, Ji W, Gupta S, Zhang Z, Davies E, Hajnóczky G, ...
The enzyme Serine-sulfate ammonia-lyase (EC 4.3.1.10) catalyzes the chemical reaction L-serine O-sulfate + H2O ⇌ {\displaystyle ... The systematic name of this enzyme class is L-serine-O-sulfate ammonia-lyase (pyruvate-forming). It is also called (L-SOS)lyase ... Thomas JH, Tudball N (1967). "Studies on the enzymic degradation of L-serine O-sulphate by a rat liver preparation". Biochem. J ...
L-serine deaminase, L-serine dehydratase, and L-serine hydro-lyase (deaminating). This enzyme participates in glycine, serine, ... The enzyme L-serine ammonia-lyase (EC 4.3.1.17) catalyzes the chemical reaction L-serine = pyruvate + NH3 (overall reaction) ( ... The systematic name of this enzyme class is L-serine ammonia-lyase (pyruvate-forming). Other names in common use include serine ... Ramos F, Wiame JM (1982). "Occurrence of a catabolic L-serine (L-threonine) deaminase in Saccharomyces cerevisiae". Eur. J. ...
The enzyme carbamoyl-serine ammonia-lyase (EC 4.3.1.13) catalyzes the chemical reaction O-carbamoyl-L-serine + H2O = pyruvate ... Other names in common use include O-carbamoyl-L-serine deaminase, carbamoylserine deaminase, and O-carbamoyl-L-serine ammonia- ... Copper AJ, Meister A (1973). "Enzymatic conversion of O-carbamyl-L-serine to pyruvate and ammonia". Biochem. Biophys. Res. ... The systematic name of this enzyme class is O-carbamoyl-L-serine ammonia-lyase (decarboxylating; pyruvate-forming). ...
SERINE/THREONINE-PROTEIN KINASE PAK-ALPHAIodide Ion ... 1F3M: Crystal Structure Of Human Serine/threonine Kinase Pak1. ...
By Kate SeRine. KENSINGTON PUBLISHING CORP.. Copyright © 2013 Kate SeRine. All rights reserved.. ISBN: 978-1-60183-121-7 ... Excerpted from Along Came a Spider by Kate SeRine. Copyright © 2013 Kate SeRine. Excerpted by permission of KENSINGTON ... Kate SeRine (pronounced "serene") is a hopeless romantic who firmly believes in true love that lasts forever. So when she began ...
Remarkably, the clearance of D-serine agreed well with GFR. The low bias as a measure of GFR was an advantage for the D-serine ... The clearance of D-serine was calculated based on the D-serine levels in the blood and urine that, measured using a two- ... D-Serine is useful for the rapid and precise measurement of kidney function. Date:. December 8, 2021. Source:. Osaka University ... "D-Serine turned out to be of great clinical importance," says the study senior author of the study, Tomonori Kimura. According ...
View mouse Sptlc2 Chr12:87351832-87435129 with: phenotypes, sequences, polymorphisms, proteins, references, function, expression
Protein target information for Serine hydroxymethyltransferase (Streptococcus equi subsp. equi 4047). Find diseases associated ...
... Summary. Serine/Threonine Protein Kinase A Raf (Proto ... Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) - Serine/threonine- ... The report reviews Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) ... The report assesses Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) ...
Serine. Description. Serine (Ser) or L-serine is an alpha-amino acid. These are amino acids in which the amino group is ... Serine and derivatives are compounds containing serine or a derivative thereof resulting from reaction of serine at the amino ... L-serine is one of 20 proteinogenic amino acids, i.e., the amino acids used in the biosynthesis of proteins. Serine is found in ... 3D MOL for HMDB0000187 (Serine). HMDB0000187 RDKit 3D L-Serine 14 13 0 0 0 0 0 0 0 0999 V2000 -0.4681 1.5652 0.0895 N 0 0 0 0 0 ...
Engineering serine integrase-based synthetic gene circuits for cellular memory and counting ... In this study, three different serine integrase-based synthetic gene circuits for cellular memory and counting were engineered ... The highly directional large serine bacteriophage integrases were utilised as the basis for the synthetic circuits constructed ...
2008) Serine 129 phosphorylation of alpha-synuclein induces unfolded protein response-mediated cell death. J Biol Chem 283: ... Mimicking Phosphorylation at Serine 87 Inhibits the Aggregation of Human α-Synuclein and Protects against Its Toxicity in a Rat ... Mimicking Phosphorylation at Serine 87 Inhibits the Aggregation of Human α-Synuclein and Protects against Its Toxicity in a Rat ... Mimicking Phosphorylation at Serine 87 Inhibits the Aggregation of Human α-Synuclein and Protects against Its Toxicity in a Rat ...
Find more product information on Phosphatidyl Serine 150 mg, Soy-Free and shop online. ... Buy Discount Phosphatidyl Serine 150 mg, Soy-Free, 60 Veg Capsules, NOW Foods at VitaSprings. ... NOW Soy-Free Phosphatidyl Serine is a phospholipid compound derived from non-GMO sunflower lecithin. Phosphatidyl serine plays ... Buy Phosphatidyl Serine 150 mg, Soy-Free from NOW Foods at VitaSprings, and we guarantee you a safe, secure online shopping ...
Trypsin-like serine proteases are crucial for influenza activation by mediating the cleavage of the viral surface glycoprotein ... Development of new inhibitors for the type II transmembrane serine protease matriptase by: Hammami Maya Published: (2012) ... The present work focused on the characterization of two relevant HA cleaving type-II transmembrane serine proteases matriptase ... Characterization of the Hemagglutinin Cleaving Transmembrane Serine Proteases Matriptase and TMPRSS2 Influenza is one of the ...
Save today on Sunflower Phosphatidyl Serine 100mg 120 Veggie Gels from NOW, VitaNet carries a large selection of NOW products ... Unlock the potential of your mind with NOW® Foods Sunflower Phosphatidyl Serine, your essential partner for a brain boost. Our ... Phosphatidyl Serine (from Sunflower Lecithin) (Sharp•PS® GREEN) 100 mg *Daily Value not established. Other Ingredients: ... Incorporate the NOW® Foods Sunflower Phosphatidyl Serine supplement into your daily regimen and experience the transformation ...
Quantitate intracellular chymotrypsin-like serine protease activity in vitro with ICTs FLISP kits. Chymotrypsin-targeting ... FLISP FAM-Phe-DAP Serine Protease Assay Kit. from ImmunoChemistry Technologies Product Manual Safety Data Sheet ... FLISP may be used in combination with FLICA to discriminate serine protease activity from caspase activity in the same cell. ... Bulk Order Inquiry for FLISP FAM-Phe-DAP Serine Protease Assay Kit ------- (please add any order requirements, including ...
Recombinant Saccharomyces cerevisiae Serine/threonine-protein kinase CAK1 (CAK1) from Cusabio. Cat Number: CSB-BP337447SVG. USA ... Recombinant Saccharomyces cerevisiae Serine/threonine-protein kinase CAK1 (CAK1) , CSB-BP337447SVG. (No reviews yet) Write a ... Recombinant Saccharomyces cerevisiae Serine/threonine-protein kinase CAK1 (CAK1) , CSB-BP337447SVG Cusabio Saccharomyces ... Recombinant Saccharomyces cerevisiae Serine/threonine-protein kinase CAK1 (CAK1) , CSB-BP337447SVG. Rating Required Select ...
Improve your day-to-day wellness with Doctors Best Phosphatidyl Serine with SerinAid 100 mg 120 Veg Caps from Swanson Health ... Phosphatidyl Serine with SerinAid features PS and other essential nutritional cofactors.. These statements have not been ... Phosphatidyl Serine with SerinAid features PS and other essential nutritional cofactors.. These statements have not been ... Nourish your brain with Phosphatidyl Serine with SerinAid from Doctors Best. This formula delivers PS, an essential brain ...
Serine racemase) mouse monoclonal antibody, clone OTI7G6 (formerly 7G6) ...
Anti-Human p34cdc2 Serine/Threonine Kinase - DyLight® 488. Home/Primary Monoclonal Antibodies/Apoptosis & Cell Biology/Anti- ...
Active Recombinant Mouse Chemokine (C-C motif) Ligand 21A (serine) E.coli. N/A. Inquiry. ... Ccl21a; chemokine (C-C motif) ligand 21A (serine); ALP; SLC; plt; CKb9; Tca4; 6Ckine; Scya21; 6CKBAC2; SCYA21a; Scya21b; ...
Home » Cell surface targeting of the Melanocortin 5 Receptor (MC5R) requires serine-rich terminal motifs ... Cell surface targeting of the Melanocortin 5 Receptor (MC5R) requires serine-rich terminal motifs ... Cell surface targeting of the Melanocortin 5 Receptor (MC5R) requires serine-rich terminal motifs. ...
A serine kinase activity has been found to be associated with mos gene products of several isolates of Mo-MuSV. A mutant of Mo- ... was also found to be associated with a serine kinase activity. Phosphorylation of p37(mos) and a 43 Kd protein (super- ... provides convincing evidence that the v-mos gene encodes a serine protein kinase activity. ... A serine kinase activity has been found to be associated with mos gene products of several isolates of Mo-MuSV. A mutant of Mo- ...
Effects of feeding reduced crude protein diets while maintaining essential amino acids and total glycine + serine ...
Notable finding: We observed D-serine induced transport-associated currents upon puff-application of 10 mM D-serine on ... Further, O-benzyl-L-serine and trans-4-hydroxy-proline, known substrate inhibitors of the alanine serine cysteine transporters ... ASCT) reduced D-serine uptake. These results indicate that ASCT is a central mediator of astrocytic D-serine transport and ... It involved placing a tiny glass patch pipette, onto the surface of the astrocytic membrane, to record D-serine transporter ...
Serine is required for the metabolism of fat, tissue growth and the immune system as it assists in the production of antibodies ... BENEFITS OF HAVING ENOUGH L-SERINE A storage source of glucose by the liver and muscles Helps streng ... L-Serine Serine is defined as an amino acid that is a common constituent of many proteins. ... Serine is defined as an amino acid that is a common constituent of many proteins. Serine is required for the metabolism of fat ...
Protease nexin-1 (PN-1), a secreted serine protease inhibitor, is constitutively expressed in distinct neuronal cell ... Progressive neuronal and motor dysfunction in mice overexpressing the serine protease inhibitor protease nexin-1 in postmitotic ... Progressive neuronal and motor dysfunction in mice overexpressing the serine protease inhibitor protease nexin-1 in postmitotic ... Protease nexin-1 (PN-1), a secreted serine protease inhibitor, is constitutively expressed in distinct neuronal cell ...
Title: Position‐specific carbon isotope analysis of serine by gas chromatography/Orbitrap mass spectrometry, and an application ... Accepted Manuscript: Position‐specific carbon isotope analysis of serine by gas chromatography/Orbitrap mass spectrometry, and ... place = {Country unknown/Code not available}, title = {Position‐specific carbon isotope analysis of serine by gas ... specific carbon isotope analysis of serine by gas chromatography/Orbitrap mass spectrometry, and an application to plant ...
nerines , serines , As nouns the difference between nerines and serines. is that nerines is plural of lang=en while serines is ... scrines , serines , As nouns the difference between scrines and serines. is that scrines is plural of scrine while serines is ... serines , eserines , As nouns the difference between serines and eserines. is that serines is plural of lang=en while eserines ... Serines vs Seines - Whats the difference?. serines , seines , As verbs the difference between serines and seines. is that ...
"Protein-Serine-Threonine Kinases" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH ( ... This graph shows the total number of publications written about "Protein-Serine-Threonine Kinases" by people in this website by ... A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other ... Below are the most recent publications written about "Protein-Serine-Threonine Kinases" by people in Profiles. ...
In this work, a general biochemical characterization in snake venom of serine proteases (SVSP), phospholipases A2 (PLA2), ... where BApNA substrate could also be recognized in general by serine proteases, such as thrombin-like and trypsin-like serine ... Figure 2. Protein pattern by SDS-PAGE, and Serine proteases zymography for C. aquilus (Ca), C. polystictus (Cp) and C. molossus ... Figure 2. Protein pattern by SDS-PAGE, and Serine proteases zymography for C. aquilus (Ca), C. polystictus (Cp) and C. molossus ...
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  • NOW Soy-Free Phosphatidyl Serine is a phospholipid compound derived from non-GMO sunflower lecithin. (vitasprings.com)
  • Phosphatidyl serine plays an essential role in cell membrane composition and intercellular communication. (vitasprings.com)
  • VitaSprings does not imply any medical claims from the customer reviews on this Phosphatidyl Serine 150 mg, Soy-Free product on this website. (vitasprings.com)
  • Write a Review on this Phosphatidyl Serine 150 mg, Soy-Free product and share your experience or opinion with other customers. (vitasprings.com)
  • Buy Phosphatidyl Serine 150 mg, Soy-Free from NOW Foods at VitaSprings, and we guarantee you a safe, secure online shopping experience! (vitasprings.com)
  • Unlock the potential of your mind with NOW® Foods Sunflower Phosphatidyl Serine , your essential partner for a brain boost. (vitanetonline.com)
  • Our unique formula, derived from non-GMO sunflower lecithin, provides a natural compound called Phosphatidyl Serine (PS), a crucial component of cell membranes. (vitanetonline.com)
  • Whether you're preparing for a challenging test, focusing on complex work tasks, or simply aiming to stay sharp in your daily life, NOW® Foods Sunflower Phosphatidyl Serine offers the cognitive support you need. (vitanetonline.com)
  • Incorporate the NOW® Foods Sunflower Phosphatidyl Serine supplement into your daily regimen and experience the transformation yourself. (vitanetonline.com)
  • Nourish your brain with Phosphatidyl Serine with SerinAid from Doctor's Best. (swansonvitamins.com)
  • Phosphatidyl Serine with SerinAid features PS and other essential nutritional cofactors. (swansonvitamins.com)
  • Quantitate intracellular chymotrypsin-like serine protease activity in vitro with ICT's FLISP kits. (immunochemistry.com)
  • Bulk Order Inquiry for FLISP FAM-Phe-DAP Serine Protease Assay Kit ------- (please add any order requirements, including desired quantity, timing, etc. (immunochemistry.com)
  • Because of their supporting role in the apoptotic process, serine protease activity will be greater in apoptotic cell populations compared to healthy cells of the same type. (immunochemistry.com)
  • FLISP may be used in combination with FLICA to discriminate serine protease activity from caspase activity in the same cell. (immunochemistry.com)
  • Progressive neuronal and motor dysfunction in mice overexpressing the serine protease inhibitor protease nexin-1 in postmitotic neurons. (ox.ac.uk)
  • Protease nexin-1 (PN-1), a secreted serine protease inhibitor, is constitutively expressed in distinct neuronal cell populations of the adult CNS. (ox.ac.uk)
  • Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) pipeline Target constitutes close to 7 molecules. (researchandmarkets.com)
  • The latest report SerineThreonine Protein Kinase A Raf - Pipeline Review, H1 2020, outlays comprehensive information on the Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) targeted therapeutics, complete with analysis by indications, stage of development, mechanism of action (MoA), route of administration (RoA) and molecule type. (researchandmarkets.com)
  • Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) - Serine/threonine-protein kinase A-Raf is an enzyme that in humans is encoded by the ARAF gene. (researchandmarkets.com)
  • Furthermore, this report also reviews key players involved in Serine/Threonine Protein Kinase A Raf (Proto Oncogene A Raf or Proto Oncogene Pks or ARAF or EC 2.7.11.1) targeted therapeutics development with respective active and dormant or discontinued projects. (researchandmarkets.com)
  • A serine kinase activity has been found to be associated with mos gene products of several isolates of Mo-MuSV. (tmc.edu)
  • In contrast, a spontaneous revertant of MuSV ts110 encodes a larger gag-mos protein (termed P100('gag-mos)) which contained a kinase activity stable to 39(DEGREES)C. Using the optimal conditions developed for the P85('gag-mos) kinase, Mo-MuSV-encoded p37('mos) was also found to be associated with a serine kinase activity. (tmc.edu)
  • This inhibitory action by antibodies to the C-terminus of p37('mos), when considered with all the other data reported here, provides convincing evidence that the v-mos gene encodes a serine protein kinase activity. (tmc.edu)
  • Testis-specific serine kinase 3 (Tssk3) is a conserved gene, but TSSK3 kinase functions and phosphorylation substrates of TSSK3 are not known. (cdc.gov)
  • Further, O-benzyl-L-serine and trans-4-hydroxy-proline, known substrate inhibitors of the alanine serine cysteine transporters (ASCT) reduced D-serine uptake. (mendeley.com)
  • Poultry PM induced upstream ERK-1/2 phosphorylation and downstream cPLA2 serine phosphorylation, in a concerted fashion, in cells with enhanced association of ERK-1/2 and cPLA2. (cdc.gov)
  • The poultry PM-induced cPLA2 serine phosphorylation and IL-8 release were attenuated by AACOCF3, PD98059, and by transfection with dominant-negative ERK-1/2 DNA in cells. (cdc.gov)
  • For the first time, this study demonstrated that the poultry PM-induced IL-8 secretion by human lung epithelial cells was regulated by cPLA2 activation through ERK-mediated serine phosphorylation, suggesting a mechanism of airway inflammation among poultry farm workers. (cdc.gov)
  • Glycine biosynthesis: Serine hydroxymethyltransferase (SHMT = serine transhydroxymethylase) also catalyzes the reversible conversions of L-serine to glycine (retro-aldol cleavage) and 5,6,7,8-tetrahydrofolate to 5,10-methylenetetrahydrofolate (mTHF) (hydrolysis). (wikipedia.org)
  • Industrially, L-serine is produced from glycine and methanol catalyzed by hydroxymethyltransferase. (wikipedia.org)
  • D-serine is a potent agonist at the glycine site (NR1) of the NMDA-type glutamate receptor (NMDAR). (wikipedia.org)
  • In fact, D-serine is a more potent agonist at the glycine site on the NMDAR than glycine itself. (wikipedia.org)
  • Had D amino acids been discovered in humans sooner, the glycine site on the NMDA receptor might instead be named the D-serine site. (wikipedia.org)
  • These symptoms respond to a variable degree to treatment with L-serine, sometimes combined with glycine. (wikipedia.org)
  • In humans, serine is a nonessential amino acid that can be easily derived from glycine. (hmdb.ca)
  • The findings of altered levels of serine and glycine in patients with psychiatric disorders and the severe neurological abnormalities in patients with defects of L-serine synthesis underscore the importance of L-serine in brain development and function. (hmdb.ca)
  • Reductive amination (transamination) of this ketone by phosphoserine transaminase (EC 2.6.1.52) yields 3-phosphoserine (O-phosphoserine) which is hydrolyzed to serine by phosphoserine phosphatase (EC 3.1.3.3). (wikipedia.org)
  • Racemic serine can be prepared in the laboratory from methyl acrylate in several steps: Hydrogenation of serine gives the diol serinol: HOCH2CH(NH2)CO2H + 2 H2 → HOCH2CH(NH2)CH2OH + 2 H2O Serine is important in metabolism in that it participates in the biosynthesis of purines and pyrimidines. (wikipedia.org)
  • In recent years, L-serine and the products of its metabolism have been recognized not only to be essential for cell proliferation, but also to be necessary for specific functions in the central nervous system. (hmdb.ca)
  • Serine is required for the metabolism of fat, tissue growth and the immune system as it assists in the production of antibodies. (sportformula.com)
  • Notably, the de novo serine synthesis pathway (SSP) plays a vital role in targeted regulation of immune responses , cell proliferation , and lipid / protein metabolism . (bvsalud.org)
  • Here, we summarize the current trends in understanding the regulatory mechanisms of serine metabolism , discuss how serine signaling governs metabolic and antistress processes, including oxidative stress , immunity , energy and lipid metabolism , intestinal microbiota , and the neurological system. (bvsalud.org)
  • We present a possible framework by which serine metabolism maintains metabolic homeostasis and treats human diseases . (bvsalud.org)
  • Serine (symbol Ser or S) is an α-amino acid that is used in the biosynthesis of proteins. (wikipedia.org)
  • Serine deficiency disorders are rare defects in the biosynthesis of the amino acid L-serine. (wikipedia.org)
  • The clearance of D-serine was calculated based on the D-serine levels in the blood and urine that, measured using a two-dimensional high performance liquid chromatography system, which is the most accurate and sensitive system for measuring D-amino acids. (sciencedaily.com)
  • Serine (Ser) or L-serine is an alpha-amino acid. (hmdb.ca)
  • L-serine is one of 20 proteinogenic amino acids, i.e., the amino acids used in the biosynthesis of proteins. (hmdb.ca)
  • Like all the amino acid building blocks of protein and peptides, serine can become essential under certain conditions, and is thus important in maintaining health and preventing disease. (hmdb.ca)
  • It has long been recognized that, in cell cultures, L-serine is a conditional essential amino acid, because it cannot be synthesized in sufficient quantities to meet the cellular demands for its utilization. (hmdb.ca)
  • Serine is defined as an amino acid that is a common constituent of many proteins. (sportformula.com)
  • The metabolites of note included small fatty acids such as decanoic and octanoic acid, amino acids such as serine and 1H-indole-3-acetic acid, and sugar derivatives such as glycerol. (medscape.com)
  • citation needed] D-Serine, synthesized in neurons by serine racemase from L-serine (its enantiomer), serves as a neuromodulator by coactivating NMDA receptors, making them able to open if they then also bind glutamate. (wikipedia.org)
  • Trypsin-like serine proteases are crucial for influenza activation by mediating the cleavage of the viral surface glycoprotein HA and hence promoting the fusion potential of the virus. (uni-marburg.de)
  • The present work focused on the characterization of two relevant HA cleaving type-II transmembrane serine proteases matriptase and TMPRSS2. (uni-marburg.de)
  • Serum serine proteases which participate in COMPLEMENT ACTIVATION. (bvsalud.org)
  • They are activated when complexed with the MANNOSE-BINDING LECTIN, therefore also known as Mannose-binding protein-Associated Serine Proteases (MASPs). (bvsalud.org)
  • Serine was first obtained from silk protein, a particularly rich source, in 1865 by Emil Cramer. (wikipedia.org)
  • The biosynthesis of serine starts with the oxidation of 3-phosphoglycerate (an intermediate from glycolysis) to 3-phosphohydroxypyruvate and NADH by phosphoglycerate dehydrogenase (EC 1.1.1.95). (wikipedia.org)
  • Besides disruption of serine biosynthesis, its transport may also become disrupted. (wikipedia.org)
  • Serine hydroxymethyltransferase (Streptococcus equi subsp. (nih.gov)
  • Streptococcus pneumoniae also expresses a serine-rich repeat (SRR) adhesin, PsrP, which is a homologue to oral Mitis group SRR adhesins, such as Hsa of Streptococcus gordonii and SrpA of Streptococcus sanguinis. (lu.se)
  • D-Serine is sweet with an additional minor sour taste at medium and high concentrations. (wikipedia.org)
  • Background: D-serine is an important signaling molecule, which activates N-methyl D-aspartate receptors (NMDARs) in conjunction with its fellow co-agonist, the neurotransmitter glutamate. (mendeley.com)
  • The research group evaluated the urinary excretion rate (clearance) of D-serine in living kidney transplant donors and recipients. (sciencedaily.com)
  • Importance: This removal of synaptic D-serine and its subsequent metabolic degradation is expected to reduce its extracellular availability, influencing NMDAR activation and NMDAR-dependent synaptic plasticity. (mendeley.com)
  • Serine signaling governs metabolic homeostasis and health. (bvsalud.org)
  • Serine has functions that are involved in metabolic homeostasis and health in pathological or stressful situations. (bvsalud.org)
  • The presentation of serine residues derived from SSP may be a signal of stress and provide novel insights into the relationship between metabolic homeostasis and diseases . (bvsalud.org)
  • It involved placing a tiny glass patch pipette, onto the surface of the astrocytic membrane, to record D-serine transporter currents. (mendeley.com)
  • Methods: Using in situ patch clamp recordings and pharmacological manipulation of astrocytes in CA1 region of the mouse hippocampal brain slices, we investigated transport of D-serine across the plasma membrane. (mendeley.com)
  • In this study, three different serine integrase-based synthetic gene circuits for cellular memory and counting were engineered and characterised. (bl.uk)
  • In liver tissue, the serine biosynthetic pathway is regulated in response to dietary and hormonal changes. (hmdb.ca)
  • Figure 2 below shows how a cholinesterase inhibitor (in this case, a nerve agent) attaches to the serine hydroxyl group on acetylcholinesterase. (cdc.gov)
  • Serine is found in all organisms ranging from bacteria to plants to animals. (hmdb.ca)
  • Apart from central nervous system, D-serine plays a signaling role in peripheral tissues and organs such as cartilage, kidney, and corpus cavernosum. (wikipedia.org)
  • These results indicate that ASCT is a central mediator of astrocytic D-serine transport and plays a role in regulating its synaptic concentration by sequestration into astrocytes. (mendeley.com)
  • Hypothesis: We hypothesise that astrocytes, a type of glial cell that surround synapses are likely candidates to control the extracellular concentration of D-Serine by removing it from the synaptic space. (mendeley.com)
  • D-Serine turned out to be of great clinical importance," says the study senior author of the study, Tomonori Kimura. (sciencedaily.com)
  • A trace amount of D-serine is present in human blood and reflects kidney function," says study lead author Masataka Kawamura. (sciencedaily.com)
  • A team of researchers has established a new method to measure glomerular filtration rate (GFR), a primary kidney function, by calculating the clearance of D-serine. (sciencedaily.com)
  • A team of researchers led by the National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN) and Osaka University established a new method to measure glomerular filtration rate (GFR), a primary kidney function, by calculating the clearance of D-serine. (sciencedaily.com)
  • The research group evaluated the clearance of D-serine when assessing GFR through the inulin clearance measurement in living kidney transplant donors and recipients. (sciencedaily.com)
  • He says "We are investigating the potential of D-serine for the precise assessment of kidney function. (sciencedaily.com)
  • According to him, "D-Serine may solve the problem of kidney disease with more than 800 million patients in the world. (sciencedaily.com)
  • Consequently, they found that the D-serine clearance strongly correlated with GFR and was less biased than the creatinine clearance, a conventional marker for renal function. (sciencedaily.com)
  • Additionally, the combinational analysis of clearances of D-serine and creatinine could measure GFR with high performance. (sciencedaily.com)
  • Notable finding: We observed D-serine induced transport-associated currents upon puff-application of 10 mM D-serine on astrocytes. (mendeley.com)
  • It is very likely that the predominant source of l-serine will be very different in different tissues and during different stages of human development. (hmdb.ca)
  • L-serine is the predominant source of one-carbon groups for the de novo synthesis of purine nucleotides and deoxythymidine monophosphate. (hmdb.ca)
  • How to interpret data: The spread sheet contains all the mean astrocytic D-serine currents that were recorded from individual cells. (mendeley.com)