Adaptor Protein Complex 3: An adaptor protein complex found primarily on perinuclear compartments.Adaptor Protein Complex 1: A clathrin adaptor protein complex primarily involved in clathrin-related transport at the TRANS-GOLGI NETWORK.Adaptor Protein Complex 2: An adaptor protein complex primarily involved in the formation of clathrin-related endocytotic vesicles (ENDOSOMES) at the CELL MEMBRANE.Adaptor Protein Complex 4: An adaptor protein complex involved in transport of molecules between the TRANS-GOLGI NETWORK and the endosomal-lysosomal system.Adaptor Protein Complex Subunits: The subunits that make up the large, medium and small chains of adaptor proteins.Adaptor Protein Complex delta Subunits: A family of large adaptin protein subunits of approximately 130-kDa in size. They have been primarily found as components of ADAPTOR PROTEIN COMPLEX 3.Adaptor Protein Complex mu Subunits: A family of medium adaptin protein subunits of approximately 45 KDa in size. They have been primarily found as components of ADAPTOR PROTEIN COMPLEX 3 and ADAPTOR PROTEIN COMPLEX 4.Adaptor Proteins, Vesicular Transport: A class of proteins involved in the transport of molecules via TRANSPORT VESICLES. They perform functions such as binding to the cell membrane, capturing cargo molecules and promoting the assembly of CLATHRIN. The majority of adaptor proteins exist as multi-subunit complexes, however monomeric varieties have also been found.Adaptor Protein Complex gamma Subunits: A family of large adaptin protein subunits of approximately 90 KDa in size. They have been primarily found as components of ADAPTOR PROTEIN COMPLEX 1.Adaptor Protein Complex beta Subunits: A family of large adaptin protein complex subunits of approximately 90-130 kDa in size.Adaptor Protein Complex alpha Subunits: A family of large adaptin protein subunits of approximately 100 kDa in size. They have been primarily found as components of ADAPTOR PROTEIN COMPLEX 2.Adaptor Proteins, Signal Transducing: A broad category of carrier proteins that play a role in SIGNAL TRANSDUCTION. They generally contain several modular domains, each of which having its own binding activity, and act by forming complexes with other intracellular-signaling molecules. Signal-transducing adaptor proteins lack enzyme activity, however their activity can be modulated by other signal-transducing enzymesClathrin: The main structural coat protein of COATED VESICLES which play a key role in the intracellular transport between membranous organelles. Each molecule of clathrin consists of three light chains (CLATHRIN LIGHT CHAINS) and three heavy chains (CLATHRIN HEAVY CHAINS) that form a structure called a triskelion. Clathrin also interacts with cytoskeletal proteins.Human Characteristics: The fundamental dispositions and traits of humans. (Merriam-Webster's Collegiate Dictionary, 10th ed)Monomeric Clathrin Assembly Proteins: A subclass of clathrin assembly proteins that occur as monomers.GRB2 Adaptor Protein: A signal transducing adaptor protein that links extracellular signals to the MAP KINASE SIGNALING SYSTEM. Grb2 associates with activated EPIDERMAL GROWTH FACTOR RECEPTOR and PLATELET-DERIVED GROWTH FACTOR RECEPTORS via its SH2 DOMAIN. It also binds to and translocates the SON OF SEVENLESS PROTEINS through its SH3 DOMAINS to activate PROTO-ONCOGENE PROTEIN P21(RAS).Shc Signaling Adaptor Proteins: A family of signaling adaptor proteins that contain SRC HOMOLOGY DOMAINS. Many members of this family are involved in transmitting signals from CELL SURFACE RECEPTORS to MITOGEN-ACTIVATED PROTEIN KINASES.Adaptor Protein Complex sigma Subunits: A family of small adaptin protein complex subunits of approximately 19 KDa in size.Endocytosis: Cellular uptake of extracellular materials within membrane-limited vacuoles or microvesicles. ENDOSOMES play a central role in endocytosis.Coated Vesicles: Vesicles formed when cell-membrane coated pits (COATED PITS, CELL-MEMBRANE) invaginate and pinch off. The outer surface of these vesicles are covered with a lattice-like network of coat proteins, such as CLATHRIN, coat protein complex proteins, or CAVEOLINS.Protein Binding: 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.trans-Golgi Network: A network of membrane compartments, located at the cytoplasmic side of the GOLGI APPARATUS, where proteins and lipids are sorted for transport to various locations in the cell or cell membrane.Clathrin-Coated Vesicles: Vesicles formed when cell-membrane coated pits (COATED PITS, CELL-MEMBRANE) invaginate and pinch off. The outer surface of these vesicles is covered with a lattice-like network of the protein CLATHRIN. Shortly after formation, however, the clathrin coat is removed and the vesicles are referred to as ENDOSOMES.Endosomes: Cytoplasmic vesicles formed when COATED VESICLES shed their CLATHRIN coat. Endosomes internalize macromolecules bound by receptors on the cell surface.Membrane Proteins: 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.Protein Transport: 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.Carrier Proteins: Transport proteins that carry specific substances in the blood or across cell membranes.Molecular Sequence Data: 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.Amino Acid Sequence: 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.Transport Vesicles: Vesicles that are involved in shuttling cargo from the interior of the cell to the cell surface, from the cell surface to the interior, across the cell or around the cell to various locations.PhosphoproteinsCoated Pits, Cell-Membrane: Specialized regions of the cell membrane composed of pits coated with a bristle covering made of the protein CLATHRIN. These pits are the entry route for macromolecules bound by cell surface receptors. The pits are then internalized into the cytoplasm to form the COATED VESICLES.GRB10 Adaptor Protein: A binding partner for several RECEPTOR PROTEIN-TYROSINE KINASES, including INSULIN RECEPTOR and INSULIN-LIKE GROWTH FACTOR RECEPTOR. It contains a C-terminal SH2 DOMAIN and mediates various SIGNAL TRANSDUCTION pathways.Gene Products, nef: Products of the retroviral NEF GENE. They play a role as accessory proteins that influence the rate of viral infectivity and the destruction of the host immune system. nef gene products were originally found as factors that trans-suppress viral replication and function as negative regulators of transcription. nef stands for negative factor.Recombinant Fusion Proteins: 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.src Homology Domains: Regions of AMINO ACID SEQUENCE similarity in the SRC-FAMILY TYROSINE KINASES that fold into specific functional tertiary structures. The SH1 domain is a CATALYTIC DOMAIN. SH2 and SH3 domains are protein interaction domains. SH2 usually binds PHOSPHOTYROSINE-containing proteins and SH3 interacts with CYTOSKELETAL PROTEINS.Multiprotein Complexes: Macromolecular complexes formed from the association of defined protein subunits.Cell Line: Established cell cultures that have the potential to propagate indefinitely.Brefeldin A: A fungal metabolite which is a macrocyclic lactone exhibiting a wide range of antibiotic activity.Signal Transduction: 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.nef Gene Products, Human Immunodeficiency Virus: Proteins encoded by the NEF GENES of the HUMAN IMMUNODEFICIENCY VIRUS.Mutation: 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.HeLa Cells: 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.Proteins: 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.Cell Membrane: The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.Lysosomes: A class of morphologically heterogeneous cytoplasmic particles in animal and plant tissues characterized by their content of hydrolytic enzymes and the structure-linked latency of these enzymes. The intracellular functions of lysosomes depend on their lytic potential. The single unit membrane of the lysosome acts as a barrier between the enzymes enclosed in the lysosome and the external substrate. The activity of the enzymes contained in lysosomes is limited or nil unless the vesicle in which they are enclosed is ruptured. Such rupture is supposed to be under metabolic (hormonal) control. (From Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)Proto-Oncogene Proteins c-crk: Signal transducing adaptor proteins that contain SRC HOMOLOGY DOMAINS and play a role in CYTOSKELETON reorganization. c-crk protein is closely related to ONCOGENE PROTEIN V-CRK and includes several alternatively spliced isoforms.Protein Structure, Tertiary: 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.Transfection: 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.Phosphorylation: The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.Protein Interaction Mapping: Methods for determining interaction between PROTEINS.CRADD Signaling Adaptor Protein: A death domain receptor signaling adaptor protein that plays a role in signaling the activation of INITIATOR CASPASES such as CASPASE 2. It contains a death domain that is specific for RIP SERINE-THEONINE KINASES and a caspase-binding domain that binds to and activates CASPASES such as CASPASE 2.Myeloid Differentiation Factor 88: An intracellular signaling adaptor protein that plays a role in TOLL-LIKE RECEPTOR and INTERLEUKIN 1 RECEPTORS signal transduction. It forms a signaling complex with the activated cell surface receptors and members of the IRAK KINASES.Two-Hybrid System Techniques: Screening techniques first developed in yeast to identify genes encoding interacting proteins. Variations are used to evaluate interplay between proteins and other molecules. Two-hybrid techniques refer to analysis for protein-protein interactions, one-hybrid for DNA-protein interactions, three-hybrid interactions for RNA-protein interactions or ligand-based interactions. Reverse n-hybrid techniques refer to analysis for mutations or other small molecules that dissociate known interactions.Binding Sites: The parts of a macromolecule that directly participate in its specific combination with another molecule.Immunoprecipitation: 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.Tyrosine: A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.Amino Acid Motifs: 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.Intracellular Signaling Peptides and Proteins: 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.Nuclear Proteins: 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.COS Cells: 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).)Models, Biological: 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.GRB7 Adaptor Protein: A SH2 DOMAIN-containing protein that mediates SIGNAL TRANSDUCTION pathways from multiple CELL SURFACE RECEPTORS, including the EPHB1 RECEPTOR. It interacts with FOCAL ADHESION KINASE and is involved in CELL MIGRATION.Precipitin Tests: 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.DNA-Binding Proteins: 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.Sequence Homology, Amino Acid: The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.Mice, Knockout: Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.Nerve Tissue ProteinsCytoskeletal Proteins: Major constituent of the cytoskeleton found in the cytoplasm of eukaryotic cells. They form a flexible framework for the cell, provide attachment points for organelles and formed bodies, and make communication between parts of the cell possible.Protein Interaction Domains and Motifs: Protein modules with conserved ligand-binding surfaces which mediate specific interaction functions in SIGNAL TRANSDUCTION PATHWAYS and the specific BINDING SITES of their cognate protein LIGANDS.Saccharomyces cerevisiae Proteins: Proteins obtained from the species SACCHAROMYCES CEREVISIAE. The function of specific proteins from this organism are the subject of intense scientific interest and have been used to derive basic understanding of the functioning similar proteins in higher eukaryotes.Jurkat Cells: A CELL LINE derived from human T-CELL LEUKEMIA and used to determine the mechanism of differential susceptibility to anti-cancer drugs and radiation.Crk-Associated Substrate Protein: Crk-associated substrate was originally identified as a highly phosphorylated 130 kDa protein that associates with ONCOGENE PROTEIN CRK and ONCOGENE PROTEIN SRC. It is a signal transducing adaptor protein that undergoes tyrosine PHOSPHORYLATION in signaling pathways that regulate CELL MIGRATION and CELL PROLIFERATION.HEK293 Cells: A cell line generated from human embryonic kidney cells that were transformed with human adenovirus type 5.Oncogene Proteins: Proteins coded by oncogenes. They include proteins resulting from the fusion of an oncogene and another gene (ONCOGENE PROTEINS, FUSION).Vesicular Transport Proteins: A broad category of proteins involved in the formation, transport and dissolution of TRANSPORT VESICLES. They play a role in the intracellular transport of molecules contained within membrane vesicles. Vesicular transport proteins are distinguished from MEMBRANE TRANSPORT PROTEINS, which move molecules across membranes, by the mode in which the molecules are transported.Proto-Oncogene Proteins c-cbl: Proto-oncogene proteins that negatively regulate RECEPTOR PROTEIN-TYROSINE KINASE signaling. It is a UBIQUITIN-PROTEIN LIGASE and the cellular homologue of ONCOGENE PROTEIN V-CBL.Models, Molecular: Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.Cells, Cultured: 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.Protein-Tyrosine Kinases: Protein kinases that catalyze the PHOSPHORYLATION of TYROSINE residues in proteins with ATP or other nucleotides as phosphate donors.Saccharomyces cerevisiae: 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.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Receptors, Interleukin-1: Cell surface receptors that are specific for INTERLEUKIN-1. Included under this heading are signaling receptors, non-signaling receptors and accessory proteins required for receptor signaling. Signaling from interleukin-1 receptors occurs via interaction with SIGNAL TRANSDUCING ADAPTOR PROTEINS such as MYELOID DIFFERENTIATION FACTOR 88.Phosphotyrosine: 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.Macromolecular Substances: Compounds and molecular complexes that consist of very large numbers of atoms and are generally over 500 kDa in size. In biological systems macromolecular substances usually can be visualized using ELECTRON MICROSCOPY and are distinguished from ORGANELLES by the lack of a membrane structure.Transcription Factors: Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.Immunoblotting: 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.Enzyme Activation: 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.Son of Sevenless Proteins: A class of RAS GUANINE NUCLEOTIDE EXCHANGE FACTORS that are genetically related to the Son of Sevenless gene from DROSOPHILA. Sevenless refers to genetic mutations in DROSOPHILA that cause loss of the R7 photoreceptor which is required to see UV light.RNA, Small Interfering: Small double-stranded, non-protein coding RNAs (21-31 nucleotides) involved in GENE SILENCING functions, especially RNA INTERFERENCE (RNAi). Endogenously, siRNAs are generated from dsRNAs (RNA, DOUBLE-STRANDED) by the same ribonuclease, Dicer, that generates miRNAs (MICRORNAS). The perfect match of the siRNAs' antisense strand to their target RNAs mediates RNAi by siRNA-guided RNA cleavage. siRNAs fall into different classes including trans-acting siRNA (tasiRNA), repeat-associated RNA (rasiRNA), small-scan RNA (scnRNA), and Piwi protein-interacting RNA (piRNA) and have different specific gene silencing functions.CARD Signaling Adaptor Proteins: A family of intracellular signaling adaptor proteins that contain caspase activation and recruitment domains. Proteins that contain this domain play a role in APOPTOSIS-related signal transduction by associating with other CARD domain-containing members and in activating INITIATOR CASPASES that contain CARD domains within their N-terminal pro-domain region.Recombinant Proteins: Proteins prepared by recombinant DNA technology.Proto-Oncogene Proteins: 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.Drosophila Proteins: Proteins that originate from insect species belonging to the genus DROSOPHILA. The proteins from the most intensely studied species of Drosophila, DROSOPHILA MELANOGASTER, are the subject of much interest in the area of MORPHOGENESIS and development.src-Family Kinases: A PROTEIN-TYROSINE KINASE family that was originally identified by homology to the Rous sarcoma virus ONCOGENE PROTEIN PP60(V-SRC). They interact with a variety of cell-surface receptors and participate in intracellular signal transduction pathways. Oncogenic forms of src-family kinases can occur through altered regulation or expression of the endogenous protein and by virally encoded src (v-src) genes.Protein Subunits: Single chains of amino acids that are the units of multimeric PROTEINS. Multimeric proteins can be composed of identical or non-identical subunits. One or more monomeric subunits may compose a protomer which itself is a subunit structure of a larger assembly.Cytoplasm: 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)Phospholipase C gamma: A phosphoinositide phospholipase C subtype that is primarily regulated by PROTEIN-TYROSINE KINASES. It is structurally related to PHOSPHOLIPASE C DELTA with the addition of SRC HOMOLOGY DOMAINS and pleckstrin homology domains located between two halves of the CATALYTIC DOMAIN.Blotting, Western: 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.Membrane Glycoproteins: Glycoproteins found on the membrane or surface of cells.RNA Interference: A gene silencing phenomenon whereby specific dsRNAs (RNA, DOUBLE-STRANDED) trigger the degradation of homologous mRNA (RNA, MESSENGER). The specific dsRNAs are processed into SMALL INTERFERING RNA (siRNA) which serves as a guide for cleavage of the homologous mRNA in the RNA-INDUCED SILENCING COMPLEX. DNA METHYLATION may also be triggered during this process.Gene Expression Regulation: 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.Ubiquitin-Protein Ligases: A diverse class of enzymes that interact with UBIQUITIN-CONJUGATING ENZYMES and ubiquitination-specific protein substrates. Each member of this enzyme group has its own distinct specificity for a substrate and ubiquitin-conjugating enzyme. Ubiquitin-protein ligases exist as both monomeric proteins multiprotein complexes.Mice, Inbred C57BLCloning, Molecular: 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.Protein-Serine-Threonine Kinases: A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other nucleotides as phosphate donors.Sequence Alignment: 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.Paxillin: Paxillin is a signal transducing adaptor protein that localizes to FOCAL ADHESIONS via its four LIM domains. It undergoes PHOSPHORYLATION in response to integrin-mediated CELL ADHESION, and interacts with a variety of proteins including VINCULIN; FOCAL ADHESION KINASE; PROTO-ONCOGENE PROTEIN PP60(C-SRC); and PROTO-ONCOGENE PROTEIN C-CRK.Cell Cycle Proteins: 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.Microscopy, Fluorescence: Microscopy of specimens stained with fluorescent dye (usually fluorescein isothiocyanate) or of naturally fluorescent materials, which emit light when exposed to ultraviolet or blue light. Immunofluorescence microscopy utilizes antibodies that are labeled with fluorescent dye.Cercopithecus aethiops: 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.LIM Domain Proteins: A large class of structurally-related proteins that contain one or more LIM zinc finger domains. Many of the proteins in this class are involved in intracellular signaling processes and mediate their effects via LIM domain protein-protein interactions. The name LIM is derived from the first three proteins in which the motif was found: LIN-11, Isl1 and Mec-3.Toll-Like Receptors: A family of pattern recognition receptors characterized by an extracellular leucine-rich domain and a cytoplasmic domain that share homology with the INTERLEUKIN 1 RECEPTOR and the DROSOPHILA toll protein. Following pathogen recognition, toll-like receptors recruit and activate a variety of SIGNAL TRANSDUCING ADAPTOR PROTEINS.Glutathione Transferase: 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.Ubiquitin: A highly conserved 76-amino acid peptide universally found in eukaryotic cells that functions as a marker for intracellular PROTEIN TRANSPORT and degradation. Ubiquitin becomes activated through a series of complicated steps and forms an isopeptide bond to lysine residues of specific proteins within the cell. These "ubiquitinated" proteins can be recognized and degraded by proteosomes or be transported to specific compartments within the cell.Protein Interaction Maps: Graphs representing sets of measurable, non-covalent physical contacts with specific PROTEINS in living organisms or in cells.Toll-Like Receptor 4: A pattern recognition receptor that interacts with LYMPHOCYTE ANTIGEN 96 and LIPOPOLYSACCHARIDES. It mediates cellular responses to GRAM-NEGATIVE BACTERIA.Mass Spectrometry: An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.Fas-Associated Death Domain Protein: A signal-transducing adaptor protein that associates with TNF RECEPTOR complexes. It contains a death effector domain that can interact with death effector domains found on INITIATOR CASPASES such as CASPASE 8 and CASPASE 10. Activation of CASPASES via interaction with this protein plays a role in the signaling cascade that leads to APOPTOSIS.Receptors, Antigen, T-Cell: Molecules on the surface of T-lymphocytes that recognize and combine with antigens. The receptors are non-covalently associated with a complex of several polypeptides collectively called CD3 antigens (ANTIGENS, CD3). Recognition of foreign antigen and the major histocompatibility complex is accomplished by a single heterodimeric antigen-receptor structure, composed of either alpha-beta (RECEPTORS, ANTIGEN, T-CELL, ALPHA-BETA) or gamma-delta (RECEPTORS, ANTIGEN, T-CELL, GAMMA-DELTA) chains.Ubiquitination: The act of ligating UBIQUITINS to PROTEINS to form ubiquitin-protein ligase complexes to label proteins for transport to the PROTEASOME ENDOPEPTIDASE COMPLEX where proteolysis occurs.Protein Conformation: 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).Actins: Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS, actin is responsible for the contraction and relaxation of muscle.Microfilament Proteins: Monomeric subunits of primarily globular ACTIN and found in the cytoplasmic matrix of almost all cells. They are often associated with microtubules and may play a role in cytoskeletal function and/or mediate movement of the cell or the organelles within the cell.Protein Multimerization: The assembly of the QUATERNARY PROTEIN STRUCTURE of multimeric proteins (MULTIPROTEIN COMPLEXES) from their composite PROTEIN SUBUNITS.Green Fluorescent Proteins: Protein analogs and derivatives of the Aequorea victoria green fluorescent protein that emit light (FLUORESCENCE) when excited with ULTRAVIOLET RAYS. They are used in REPORTER GENES in doing GENETIC TECHNIQUES. Numerous mutants have been made to emit other colors or be sensitive to pH.Protein Isoforms: Different forms of a protein that may be produced from different GENES, or from the same gene by ALTERNATIVE SPLICING.Cullin Proteins: A family of structurally related proteins that were originally discovered for their role in cell-cycle regulation in CAENORHABDITIS ELEGANS. They play important roles in regulation of the CELL CYCLE and as components of UBIQUITIN-PROTEIN LIGASES.14-3-3 Proteins: 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.Transcription, Genetic: The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.Retinoblastoma-Like Protein p130: A negative regulator of the CELL CYCLE that undergoes PHOSPHORYLATION by CYCLIN-DEPENDENT KINASES. RBL2 contains a conserved pocket region that binds E2F4 TRANSCRIPTION FACTOR and E2F5 TRANSCRIPTION FACTOR. RBL2 also interacts with viral ONCOPROTEINS such as POLYOMAVIRUS TUMOR ANTIGENS; ADENOVIRUS E1A PROTEINS; and PAPILLOMAVIRUS E7 PROTEINS.Cell Nucleus: 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)Syntenins: Intracellular signaling adaptor proteins that play a role in the coupling of SYNDECANS to CYTOSKELETAL PROTEINS.Dystrophin-Associated Protein Complex: A macromolecular complex of proteins that includes DYSTROPHIN and DYSTROPHIN-ASSOCIATED PROTEINS. It plays a structural role in the linking the CYTOSKELETON to the EXTRACELLULAR MATRIX.ZAP-70 Protein-Tyrosine Kinase: A protein tyrosine kinase that is required for T-CELL development and T-CELL ANTIGEN RECEPTOR function.Proto-Oncogene Proteins pp60(c-src): Membrane-associated tyrosine-specific kinases encoded by the c-src genes. They have an important role in cellular growth control. Truncation of carboxy-terminal residues in pp60(c-src) leads to PP60(V-SRC) which has the ability to transform cells. This kinase pp60 c-src should not be confused with csk, also known as c-src kinase.Electrophoresis, Polyacrylamide Gel: Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.T-Lymphocytes: Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.Cytoskeleton: The network of filaments, tubules, and interconnecting filamentous bridges which give shape, structure, and organization to the cytoplasm.Mutagenesis, Site-Directed: Genetically engineered MUTAGENESIS at a specific site in the DNA molecule that introduces a base substitution, or an insertion or deletion.RNA-Binding Proteins: Proteins that bind to RNA molecules. Included here are RIBONUCLEOPROTEINS and other proteins whose function is to bind specifically to RNA.Fungal Proteins: Proteins found in any species of fungus.ADP-Ribosylation Factors: MONOMERIC GTP-BINDING PROTEINS that were initially recognized as allosteric activators of the MONO(ADP-RIBOSE) TRANSFERASE of the CHOLERA TOXIN catalytic subunit. They are involved in vesicle trafficking and activation of PHOSPHOLIPASE D. This enzyme was formerly listed as EC 3.6.1.47Dimerization: The process by which two molecules of the same chemical composition form a condensation product or polymer.Golgi Apparatus: A stack of flattened vesicles that functions in posttranslational processing and sorting of proteins, receiving them from the rough ENDOPLASMIC RETICULUM and directing them to secretory vesicles, LYSOSOMES, or the CELL MEMBRANE. The movement of proteins takes place by transfer vesicles that bud off from the rough endoplasmic reticulum or Golgi apparatus and fuse with the Golgi, lysosomes or cell membrane. (From Glick, Glossary of Biochemistry and Molecular Biology, 1990)DNA, Complementary: 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.Mitogen-Activated Protein Kinases: 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).Phosphatidylinositol 3-Kinases: 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.Bacterial Proteins: Proteins found in any species of bacterium.3T3 Cells: 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.Cell Line, Tumor: A cell line derived from cultured tumor cells.Calcium-Binding Proteins: Proteins to which calcium ions are bound. They can act as transport proteins, regulator proteins, or activator proteins. They typically contain EF HAND MOTIFS.Protein Processing, Post-Translational: 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.Proteolysis: Cleavage of proteins into smaller peptides or amino acids either by PROTEASES or non-enzymatically (e.g., Hydrolysis). It does not include Protein Processing, Post-Translational.Protein Structure, Quaternary: The characteristic 3-dimensional shape and arrangement of multimeric proteins (aggregates of more than one polypeptide chain).RNA, Messenger: 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.PDZ Domains: Protein interaction domains of about 70-90 amino acid residues, named after a common structure found in PSD-95, Discs Large, and Zona Occludens 1 proteins. PDZ domains are involved in the recruitment and interaction of proteins, and aid the formation of protein scaffolds and signaling networks. This is achieved by sequence-specific binding between a PDZ domain in one protein and a PDZ motif in another protein.NF-kappa B: Ubiquitous, inducible, nuclear transcriptional activator that binds to enhancer elements in many different cell types and is activated by pathogenic stimuli. The NF-kappa B complex is a heterodimer composed of two DNA-binding subunits: NF-kappa B1 and relA.Drosophila: A genus of small, two-winged flies containing approximately 900 described species. These organisms are the most extensively studied of all genera from the standpoint of genetics and cytology.Microscopy, Confocal: A light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible.Receptors, Cell Surface: Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands.DNA Primers: 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.Plasmids: 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.Death Domain Receptor Signaling Adaptor Proteins: Intracellular signaling adaptor proteins that bind to the cytoplasmic death domain region found on DEATH DOMAIN RECEPTORS. Many of the proteins in this class take part in intracellular signaling from TUMOR NECROSIS FACTOR RECEPTORS.Arrestins: Regulatory proteins that down-regulate phosphorylated G-protein membrane receptors, including rod and cone photoreceptors and adrenergic receptors.Receptors, Immunologic: Cell surface molecules on cells of the immune system that specifically bind surface molecules or messenger molecules and trigger changes in the behavior of cells. Although these receptors were first identified in the immune system, many have important functions elsewhere.Repressor Proteins: Proteins which maintain the transcriptional quiescence of specific GENES or OPERONS. Classical repressor proteins are DNA-binding proteins that are normally bound to the OPERATOR REGION of an operon, or the ENHANCER SEQUENCES of a gene until a signal occurs that causes their release.Cell Adhesion: Adherence of cells to surfaces or to other cells.Yeasts: A general term for single-celled rounded fungi that reproduce by budding. Brewers' and bakers' yeasts are SACCHAROMYCES CEREVISIAE; therapeutic dried yeast is YEAST, DRIED.Crystallography, X-Ray: The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Ligands: A molecule that binds to another molecule, used especially to refer to a small molecule that binds specifically to a larger molecule, e.g., an antigen binding to an antibody, a hormone or neurotransmitter binding to a receptor, or a substrate or allosteric effector binding to an enzyme. Ligands are also molecules that donate or accept a pair of electrons to form a coordinate covalent bond with the central metal atom of a coordination complex. (From Dorland, 27th ed)Endosomal Sorting Complexes Required for Transport: A set of protein subcomplexes involved in PROTEIN SORTING of UBIQUITINATED PROTEINS into intraluminal vesicles of MULTIVESICULAR BODIES and in membrane scission during formation of intraluminal vesicles, during the final step of CYTOKINESIS, and during the budding of enveloped viruses. The ESCRT machinery is comprised of the protein products of Class E vacuolar protein sorting genes.Guanine Nucleotide Exchange Factors: Protein factors that promote the exchange of GTP for GDP bound to GTP-BINDING PROTEINS.TNF Receptor-Associated Factor 6: A signal transducing tumor necrosis factor receptor associated factor that is involved in regulation of NF-KAPPA B signalling and activation of JNK MITOGEN-ACTIVATED PROTEIN KINASES.Receptors, Antigen, B-Cell: IMMUNOGLOBULINS on the surface of B-LYMPHOCYTES. Their MESSENGER RNA contains an EXON with a membrane spanning sequence, producing immunoglobulins in the form of type I transmembrane proteins as opposed to secreted immunoglobulins (ANTIBODIES) which do not contain the membrane spanning segment.Proteomics: The systematic study of the complete complement of proteins (PROTEOME) of organisms.Cell Polarity: Orientation of intracellular structures especially with respect to the apical and basolateral domains of the plasma membrane. Polarized cells must direct proteins from the Golgi apparatus to the appropriate domain since tight junctions prevent proteins from diffusing between the two domains.Peptides: 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.Coat Protein Complex I: A protein complex comprised of COATOMER PROTEIN and ADP RIBOSYLATION FACTOR 1. It is involved in transport of vesicles between the ENDOPLASMIC RETICULUM and the GOLGI APPARATUS.Fibroblasts: Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.Clathrin Heavy Chains: The heavy chain subunits of clathrin.Apoptosis: 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.Receptor Protein-Tyrosine Kinases: A class of cellular receptors that have an intrinsic PROTEIN-TYROSINE KINASE activity.Cell Adhesion Molecules, Neuronal: Surface ligands that mediate cell-to-cell adhesion and function in the assembly and interconnection of the vertebrate nervous system. These molecules promote cell adhesion via a homophilic mechanism. These are not to be confused with NEURAL CELL ADHESION MOLECULES, now known to be expressed in a variety of tissues and cell types in addition to nervous tissue.Kinetics: The rate dynamics in chemical or physical systems.Promoter Regions, Genetic: DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes.Toll-Like Receptor 2: A pattern recognition receptor that forms heterodimers with other TOLL-LIKE RECEPTORS. It interacts with multiple ligands including PEPTIDOGLYCAN, bacterial LIPOPROTEINS, lipoarabinomannan, and a variety of PORINS.Endopeptidase Clp: An ATP-dependent protease found in prokaryotes, CHLOROPLASTS, and MITOCHONDRIA. It is a soluble multisubunit complex that plays a role in the degradation of many abnormal proteins.Gene Deletion: A genetic rearrangement through loss of segments of DNA or RNA, bringing sequences which are normally separated into close proximity. This deletion may be detected using cytogenetic techniques and can also be inferred from the phenotype, indicating a deletion at one specific locus.GTPase-Activating Proteins: Proteins that activate the GTPase of specific GTP-BINDING PROTEINS.Down-Regulation: A negative regulatory effect on physiological processes at the molecular, cellular, or systemic level. At the molecular level, the major regulatory sites include membrane receptors, genes (GENE EXPRESSION REGULATION), mRNAs (RNA, MESSENGER), and proteins.Immunity, Innate: The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from the presence of naturally occurring ANTI-INFECTIVE AGENTS, constitutional factors such as BODY TEMPERATURE and immediate acting immune cells such as NATURAL KILLER CELLS.Protein Tyrosine Phosphatase, Non-Receptor Type 11: A subtype of non-receptor protein tyrosine phosphatases that contain two SRC HOMOLOGY DOMAINS. Mutations in the gene for protein tyrosine phosphatase, non-receptor type 11 are associated with NOONAN SYNDROME.Receptor, Epidermal Growth Factor: A cell surface receptor involved in regulation of cell growth and differentiation. It is specific for EPIDERMAL GROWTH FACTOR and EGF-related peptides including TRANSFORMING GROWTH FACTOR ALPHA; AMPHIREGULIN; and HEPARIN-BINDING EGF-LIKE GROWTH FACTOR. The binding of ligand to the receptor causes activation of its intrinsic tyrosine kinase activity and rapid internalization of the receptor-ligand complex into the cell.Cricetinae: A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS.Adenosine Triphosphatases: A group of enzymes which catalyze the hydrolysis of ATP. The hydrolysis reaction is usually coupled with another function such as transporting Ca(2+) across a membrane. These enzymes may be dependent on Ca(2+), Mg(2+), anions, H+, or DNA.Protein Kinases: A family of enzymes that catalyze the conversion of ATP and a protein to ADP and a phosphoprotein.MAP Kinase Signaling System: An intracellular signaling system involving the MAP kinase cascades (three-membered protein kinase cascades). Various upstream activators, which act in response to extracellular stimuli, trigger the cascades by activating the first member of a cascade, MAP KINASE KINASE KINASES; (MAPKKKs). Activated MAPKKKs phosphorylate MITOGEN-ACTIVATED PROTEIN KINASE KINASES which in turn phosphorylate the MITOGEN-ACTIVATED PROTEIN KINASES; (MAPKs). The MAPKs then act on various downstream targets to affect gene expression. In mammals, there are several distinct MAP kinase pathways including the ERK (extracellular signal-regulated kinase) pathway, the SAPK/JNK (stress-activated protein kinase/c-jun kinase) pathway, and the p38 kinase pathway. There is some sharing of components among the pathways depending on which stimulus originates activation of the cascade.Escherichia coli: 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.Proto-Oncogene Proteins c-fyn: Src-family kinases that associate with T-CELL ANTIGEN RECEPTOR and phosphorylate a wide variety of intracellular signaling molecules.Focal Adhesions: An anchoring junction of the cell to a non-cellular substrate. It is composed of a specialized area of the plasma membrane where bundles of the ACTIN CYTOSKELETON terminate and attach to the transmembrane linkers, INTEGRINS, which in turn attach through their extracellular domains to EXTRACELLULAR MATRIX PROTEINS.
(1/337) Phosphorylation of the medium chain subunit of the AP-2 adaptor complex does not influence its interaction with the tyrosine based internalisation motif of TGN38.

Tyrosine based motifs conforming to the consensus YXXphi (where phi represents a bulky hydrophobic residue) have been shown to interact with the medium chain subunit of clathrin adaptor complexes. These medium chains are targets for phosphorylation by a kinase activity associated with clathrin coated vesicles. We have used the clathrin coated vesicle associated kinase activity to specifically phosphorylate a soluble recombinant fusion protein of mu2, the medium chain subunit of the plasma membrane associated adaptor protein complex AP-2. We have tested whether this phosphorylation has any effect on the interaction of mu2 with the tyrosine based motif containing protein, TGN38, that has previously been shown to interact with mu2. Phosphorylation of mu2 was shown to have no significant effect on the in vitro interaction of mu2 with the cytosolic domain of TGN38, indicating that reversible phosphorylation of mu2 does not play a role in regulating its direct interaction with tyrosine based internalisation motifs. In addition, although a casein kinase II-like activity has been shown to be associated with clathrin coated vesicles, we show that mu2 is not phosphorylated by casein kinase II implying that another kinase activity is present in clathrin coated vesicles. Furthermore the kinase activity associated with clathrin coated vesicles was shown to be capable of phosphorylating dynamin 1. Phosphorylation of dynamin 1 has previously been shown to regulate its interaction with other proteins involved in clathrin mediated endocytosis.  (+info)

(2/337) Inhibition of the receptor-binding function of clathrin adaptor protein AP-2 by dominant-negative mutant mu2 subunit and its effects on endocytosis.

Although interactions between the mu2 subunit of the clathrin adaptor protein complex AP-2 and tyrosine-based internalization motifs have been implicated in the selective recruitment of cargo molecules into coated pits, the functional significance of this interaction for endocytosis of many types of membrane proteins remains unclear. To analyze the function of mu2-receptor interactions, we constructed an epitope-tagged mu2 that incorporates into AP-2 and is targeted to coated pits. Mutational analysis revealed that Asp176 and Trp421 of mu2 are involved in the interaction with internalization motifs of TGN38 and epidermal growth factor (EGF) receptor. Inducible overexpression of mutant mu2, in which these two residues were changed to alanines, resulted in metabolic replacement of endogenous mu2 in AP-2 complexes and complete abrogation of AP-2 interaction with the tyrosine-based internalization motifs. As a consequence, endocytosis of the transferrin receptor was severely impaired. In contrast, internalization of the EGF receptor was not affected. These results demonstrate the potential usefulness of the dominant-interfering approach for functional analysis of the adaptor protein family, and indicate that clathrin-mediated endocytosis may proceed in both a mu2-dependent and -independent manner.  (+info)

(3/337) Splice variants of intersectin are components of the endocytic machinery in neurons and nonneuronal cells.

We recently identified and cloned intersectin, a protein containing two Eps15 homology (EH) domains and five Src homology 3 (SH3) domains. Using a newly developed intersectin antibody, we demonstrate that endogenous COS-7 cell intersectin localizes to clathrin-coated pits, and transfection studies suggest that the EH domains may direct this localization. Through alternative splicing in a stop codon, a long form of intersectin is generated with a C-terminal extension containing Dbl homology (DH), pleckstrin homology (PH), and C2 domains. Western blots reveal that the long form of intersectin is expressed specifically in neurons, whereas the short isoform is expressed at lower levels in glia and other nonneuronal cells. Immunofluorescence analysis of cultured hippocampal neurons reveals that intersectin is found at the plasma membrane where it is co-localized with clathrin. Ibp2, a protein identified based on its interactions with the EH domains of intersectin, binds to clathrin through the N terminus of the heavy chain, suggesting a mechanism for the localization of intersectin at clathrin-coated pits. Ibp2 also binds to the clathrin adaptor AP2, and antibodies against intersectin co-immunoprecipitate clathrin, AP2, and dynamin from brain extracts. These data suggest that the long and short forms of intersectin are components of the endocytic machinery in neurons and nonneuronal cells.  (+info)

(4/337) A structural explanation for the binding of multiple ligands by the alpha-adaptin appendage domain.

The alpha subunit of the endocytotic AP2 adaptor complex contains a 30 kDa "appendage" domain, which is joined to the rest of the protein via a flexible linker. The 1.9 A resolution crystal structure of this domain reveals a single binding site for its ligands, which include amphiphysin, Eps15, and epsin. This domain when overexpressed in COS7 fibroblasts is shown to inhibit transferrin uptake, whereas mutants in which interactions with its binding partners are abolished do not. DPF/W motifs present in appendage domain-binding partners are shown to play a crucial role in their interactions with the domain. A single site for binding multiple ligands would allow for temporal and spatial regulation in the recruitment of components of the endocytic machinery.  (+info)

(5/337) Dynamin-dependent endocytosis of ionotropic glutamate receptors.

Little is known about the mechanisms that regulate the number of ionotropic glutamate receptors present at excitatory synapses. Herein, we show that GluR1-containing alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptors (AMPARs) are removed from the postsynaptic plasma membrane of cultured hippocampal neurons by rapid, ligand-induced endocytosis. Although endocytosis of AMPARs can be induced by high concentrations of AMPA without concomitant activation of N-methyl-D-aspartate (NMDA) receptors (NMDARs), NMDAR activation is required for detectable endocytosis induced by synaptically released glutamate. Activated AMPARs colocalize with AP2, a marker of endocytic coated pits, and endocytosis of AMPARs is blocked by biochemical inhibition of clathrin-coated pit function or overexpression of a dominant-negative mutant form of dynamin. These results establish that ionotropic receptors are regulated by dynamin-dependent endocytosis and suggest an important role of endocytic membrane trafficking in the postsynaptic modulation of neurotransmission.  (+info)

(6/337) Association of AP1 adaptor complexes with GLUT4 vesicles.

Nycodenz gradients have been used to examine the in vitro effects of GTP-(gamma)-S on adaptor complex association with GLUT4 vesicles. On addition of GTP-(gamma)-S, GLUT4 fractionates as a heavier population of vesicles, which we suggest is due to a budding or coating reaction. Under these conditions there is an increase in co-sedimentation of GLUT4 with AP1, but not with AP3. Western blotting of proteins associated with isolated GLUT4 vesicles shows the presence of high levels of AP1 and some AP3 but very little AP2 adaptor complexes. Cell free, in vitro association of the AP1 complex with GLUT4 vesicles is increased approximately 4-fold by the addition of GTP-(gamma)-S and an ATP regenerating system. Following GTP-(gamma)-S treatment in vitro, ARF is also recruited to GLUT4 vesicles, and the temperature dependence of ARF recruitment closely parallels that of AP1. The recruitment of both AP1 and ARF are partially blocked by brefeldin A. These data demonstrate that the coating of GLUT4 vesicles can be studied in isolated cell-free fractions. Furthermore, at least two distinct adaptor complexes can associate with the GLUT4 vesicles and it is likely that these adaptors are involved in mediating distinct intracellular sorting events at the level of TGN and endosomes.  (+info)

(7/337) The leucine-based sorting motifs in the cytoplasmic domain of the invariant chain are recognized by the clathrin adaptors AP1 and AP2 and their medium chains.

Recognition of sorting signals within the cytoplasmic tail of membrane proteins by adaptor protein complexes is a crucial step in membrane protein sorting. The three known adaptor complexes, AP1, AP2, and AP3, have all been shown to recognize tyrosine- and leucine-based sorting signals, which are the most common sorting signals within membrane protein cytoplasmic tails. Although tyrosine-based signals are recognized by the micro-chains of adaptor complexes, the subunit recognizing leucine-based sorting signals is less clear. In this report we show by surface plasmon resonance that the two leucine-based sorting signals within the cytoplasmic tail of the invariant chain bind independently from each other to AP1 and AP2 but not to AP3. We also show that both motifs can be recognized by the micro-chains of AP1 and AP2. Moreover, by using monomeric as well as trimeric invariant chain constructs, we show that adaptor binding does not require trimerization of the invariant chain.  (+info)

(8/337) Internalization of proximal tubular type II Na-P(i) cotransporter by PTH: immunogold electron microscopy.

Physiological/pathophysiological alterations in proximal tubular P(i) reabsorption are associated with an altered brush-border membrane (BBM) expression of type II Na-P(i) cotransporter molecules. Reduction is achieved by an internalization and lysosomal degradation and an increase in P(i) reabsorption by new synthesis and BBM insertion of type II Na-P(i) cotransporters. In the present study, we investigated by immunohistochemistry and immunogold electron microscopy the routing of internalized rat type II Na-P(i) cotransporters (NaPi-2). In kidney of rats on a chronic low-P(i) diet, NaPi-2 is mainly localized in the BBM, in cisterns of the Golgi apparatus and sparsely also in large endocytotic vacuoles and lysosomes. Fifteen minutes after the injection of the 1-34 analog of parathyroid hormone (PTH), the amount of NaPi-2 was decreased in the BBM and increased in endocytotic vesicles. NaPi-2 molecules colocalized with horseradish peroxidase injected prior to the injection of PTH. Vesicles labeled for NaPi-2 were occasionally also labeled for clathrin or the adaptor protein AP2. We conclude that NaPi-2 molecules enter the subapical compartment from where NaPi-2-containing vesicles are segregated off and directed to the lysosomes. A clathrin-mediated pathway may contribute to the PTH-induced internalization of NaPi-2.  (+info)

*  Endosome
Proteins are marked for this pathway by the addition of ubiquitin. The endosomal sorting complexes required for transport ( ... The GGAs and AP-1 clathrin-coated vesicle adaptors make vesicles at the Golgi that carry molecules to endosomes. In the ... Transmembrane proteins can be delivered to the perimeter membrane or the lumen of lysosomes. Transmembrane proteins destined ... Ghosh, P.; Kornfeld, S. (Jul 2004). "The GGA proteins: key players in protein sorting at the trans-Golgi network". Eur J Cell ...
*  Adaptor-related protein complex 2, alpha 1
... has been shown to interact with DPYSL2 and NUMB. GRCh38: Ensembl release 89: ... "Entrez Gene: AP2A1 adaptor-related protein complex 2, alpha 1 subunit". Nishimura, Takashi; Fukata Yuko; Kato Katsuhiro; ... This gene encodes the alpha 1 adaptin subunit of the adaptor protein 2 (AP2 adaptors) complex found in clathrin coated vesicles ... 1996). "Interaction of Shc with adaptor protein adaptins". J. Biol. Chem. 271 (9): 5265-9. doi:10.1074/jbc.271.9.5265. PMID ...
*  EPN1
2000). "Regulation of complex formation of POB1/epsin/adaptor protein complex 2 by mitotic phosphorylation". J. Biol. Chem. 275 ... EPN1 is an endocytic accessory protein that interacts with EPS15 (MIM 600051), the alpha subunit of the clathrin adaptor AP2 ( ... Timsit YE, Miller SL, Mohney RP, O'Bryan JP (2005). "The U-box ligase carboxyl-terminus of Hsc 70-interacting protein ... Epsin-1 is a protein that in humans is encoded by the EPN1 gene. ... as well as with other accessory proteins for the endocytosis of ...
*  Steven J. Burakoff
Journal of Immunology, 2006 PMID 17056525 HIV Nef-mediated CD4 down-regulation is adaptor protein complex 2 dependent. Jin YJ, ... protein oxidation and altered protein expression reveal targets of damage, stress response, and antioxidant responsiveness. ... cell age reduces effector activity but preserves proliferative capacity in a murine allogeneic major histocompatibility complex ...
*  AP2B1
The protein encoded by this gene is one of two large chain components of the AP2 adaptor complex, which serves to link clathrin ... "Entrez Gene: AP2B1 adaptor-related protein complex 2, beta 1 subunit". Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, ... He G, Gupta S, Yi M, Michaely P, Hobbs HH, Cohen JC (Nov 2002). "ARH is a modular adaptor protein that interacts with the LDL ... He G, Gupta S, Yi M, Michaely P, Hobbs HH, Cohen JC (Nov 2002). "ARH is a modular adaptor protein that interacts with the LDL ...
*  AP1S2
Adaptor protein complex 1 is found at the cytoplasmic face of coated vesicles located at the Golgi complex, where it mediates ... "Entrez Gene: AP1S2 adaptor-related protein complex 1, sigma 2 subunit". Human AP1S2 genome location and AP1S2 gene details page ... The protein encoded by this gene serves as the small subunit of this complex and is a member of the adaptin protein family. ... "HIV-1 Nef stabilizes the association of adaptor protein complexes with membranes". The Journal of Biological Chemistry. 278 (10 ...
*  ATP6V1H
"Subunit H of the V-ATPase binds to the medium chain of adaptor protein complex 2 and connects Nef to the endocytic machinery". ... V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation ... Additional isoforms of many of the V1 and V0 subunit proteins are encoded by multiple genes or alternatively spliced transcript ... 12 (2): 463-73. doi:10.1091/mbc.12.2.463. PMC 30956 . PMID 11179428. Geyer M, Yu H, Mandic R, Linnemann T, Zheng YH, Fackler OT ...
*  AP3D1
AP-3 complex subunit delta-1 is a protein that in humans is encoded by the AP3D1 gene. AP3D1 is a subunit of the AP3 adaptor- ... "Entrez Gene: AP3D1 adaptor-related protein complex 3, delta 1 subunit". Martinez-Arca S, Rudge R, Vacca M, Raposo G, Camonis J ... "Characterization of the adaptor-related protein complex, AP-3". The Journal of Cell Biology. 137 (4): 835-45. doi:10.1083/jcb. ... "Interactions of HIV-1 nef with the mu subunits of adaptor protein complexes 1, 2, and 3: role of the dileucine-based sorting ...
*  AP3M1
The protein encoded by this gene is the medium subunit of AP-3, which is an adaptor-related protein complex associated with the ... "Entrez Gene: AP3M1 adaptor-related protein complex 3, mu 1 subunit". Human AP3M1 genome location and AP3M1 gene details page in ... 2000). "Interactions of HIV-1 nef with the mu subunits of adaptor protein complexes 1, 2, and 3: role of the dileucine-based ... 2005). "Leucine-specific, functional interactions between human immunodeficiency virus type 1 Nef and adaptor protein complexes ...
*  X-linked intellectual disability
Adaptor protein complex 1 is found on the cytoplasmic face of vesicles located at the Golgi complex, where it mediates both the ... "Entrez Gene: AP1S2 adaptor-related protein complex 1, sigma 2 subunit". Piccini M, Vitelli F, Bruttini M, Pober BR, Jonsson JJ ... This nucleolar protein is involved in the processing and modification of tRNA. GDI1: RabGDI alpha makes a complex with ... All AFF proteins are localized in the nucleus and have a role as transcriptional activators with a positive action on RNA ...
*  ARF5
... and 3 ADP-ribosylation factors with adaptor protein complexes 1 and 3". Biochemistry. 41 (14): 4669-77. doi:10.1021/bi016064j. ... 2000). "A New Paxillin-binding Protein, PAG3/Papα/KIAA0400, Bearing an ADP-Ribosylation Factor GTPase-activating Protein ... 2005). "Towards a proteome-scale map of the human protein-protein interaction network". Nature. 437 (7062): 1173-8. doi:10.1038 ... The gene products include 6 ARF proteins and 11 ARF-like proteins and constitute 1 family of the RAS superfamily. The ARF ...
*  AP1G1
The protein encoded by this gene is a gamma-adaptin protein and it belongs to the adaptor complexes large subunits family. Two ... "Entrez Gene: AP1G1 adaptor-related protein complex 1, gamma 1 subunit". Fölsch H, Ohno H, Bonifacino JS, Mellman I (Oct 1999 ... and 3 ADP-ribosylation factors with adaptor protein complexes 1 and 3". Biochemistry. 41 (14): 4669-77. doi:10.1021/bi016064j. ... "Interactions between adaptor protein-1 of the clathrin coat and microtubules via type 1a microtubule-associated proteins". The ...
*  AP3S2
"Entrez Gene: AP3S2 adaptor-related protein complex 3, sigma 2 subunit". Dell'Angelica, E C; Ooi C E; Bonifacino J S (Jun 1997 ... 2003). "Specific regulation of the adaptor protein complex AP-3 by the Arf GAP AGAP1". Dev. Cell. 5 (3): 513-21. doi:10.1016/ ... an adaptor-like protein complex with ubiquitous expression". EMBO J. 16 (5): 917-28. doi:10.1093/emboj/16.5.917. PMC 1169692 . ... 2002). "Role of adaptor complex AP-3 in targeting wild-type and mutated CD63 to lysosomes". Mol. Biol. Cell. 13 (3): 1071-82. ...
*  AP3B2
"Entrez Gene: AP3B2 adaptor-related protein complex 3, beta 2 subunit". Human AP3B2 genome location and AP3B2 gene details page ... 1997). "AP-3: an adaptor-like protein complex with ubiquitous expression". EMBO J. 16 (5): 917-28. doi:10.1093/emboj/16.5.917. ... Dell'Angelica EC, Klumperman J, Stoorvogel W, Bonifacino JS (1998). "Association of the AP-3 adaptor complex with clathrin". ... AP-3 complex subunit beta-2 is a protein that in humans is encoded by the AP3B2 gene. GRCh38: Ensembl release 89: ...
*  AP2M1
"Entrez Gene: AP2M1 adaptor-related protein complex 2, mu 1 subunit". Follows ER, McPheat JC, Minshull C, Moore NC, Pauptit RA, ... which belongs to the adaptor complexes medium subunits family. The encoded protein is required for the activity of a vacuolar ... Diviani D, Lattion AL, Abuin L, Staub O, Cotecchia S (May 2003). "The adaptor complex 2 directly interacts with the alpha 1b- ... Zhang Y, Allison JP (Aug 1997). "Interaction of CTLA-4 with AP50, a clathrin-coated pit adaptor protein". Proceedings of the ...
*  AP1G2
The protein encoded by this gene is a gamma-adaptin protein and it belongs to the adaptor complexes large subunits family. This ... "Entrez Gene: AP1G2 adaptor-related protein complex 1, gamma 2 subunit". Rost, Martina; Döring Tatjana; Prange Reinhild (Nov ... 2003). "HIV-1 Nef stabilizes the association of adaptor protein complexes with membranes". J. Biol. Chem. 278 (10): 8725-32. ... 2005). "Leucine-specific, functional interactions between human immunodeficiency virus type 1 Nef and adaptor protein complexes ...
*  AP2A2
"Entrez Gene: AP2A2 adaptor-related protein complex 2, alpha 2 subunit". Chen H, Fre S, Slepnev VI, Capua MR, Takei K, Butler MH ... the cytoplasmic domains of human and simian retroviral transmembrane proteins with components of the clathrin adaptor complexes ... "Interaction of Shc with adaptor protein adaptins". The Journal of Biological Chemistry. 271 (9): 5265-9. doi:10.1074/jbc.271.9. ... "Interaction of Shc with adaptor protein adaptins". The Journal of Biological Chemistry. 271 (9): 5265-9. doi:10.1074/jbc.271.9. ...
*  Adaptor complexes medium subunit domain
In molecular biology, the adaptor complexes medium subunit domain is a protein domain found at the C-terminus of the mu subunit ... "Bivalent Motif-Ear Interactions Mediate the Association of the Accessory Protein Tepsin with the AP-4 Adaptor Complex". The ... from various clathrin adaptor protein complexes (AP1, AP2, AP3, AP4 and AP5) and muniscins. The C-terminal domain has an ... The mu subunit regulates the coupling of clathrin lattices with particular membrane proteins by self-phosphorylation via a ...
*  CTLA-4
The CTLA-4 protein is encoded by the Ctla4 gene in mice and the CTLA4 gene in humans. In 1987, cytotoxic T-lymphocyte antigen 4 ... "Crystal structure of the B7-1/CTLA-4 complex that inhibits human immune responses". Nature. 410 (6828): 608-11. doi:10.1038/ ... The fusion protein CTLA4-Ig is commercially available as Orencia (abatacept). A second generation form of CTLA4-Ig known as ... CTLA4 is homologous to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and ...
*  DPYSL2
... has been shown to interact with CRMP1, Adaptor-related protein complex 2, alpha 1 and NUMB. GRCh38: Ensembl release 89: ... Dihydropyrimidinase-related protein 2 is an enzyme that in humans is encoded by the DPYSL2 gene. ... 2003). "p80 ROKalpha binding protein is a novel splice variant of CRMP-1 which associates with CRMP-2 and modulates RhoA- ... Gu Y, Ihara Y (2000). "Evidence that collapsin response mediator protein-2 is involved in the dynamics of microtubules". J. ...
*  EPN2
This gene encodes a protein which interacts with clathrin and adaptor-related protein complex 2, alpha 1 subunit. The protein ... 1998). "Intersectin, a novel adaptor protein with two Eps15 homology and five Src homology 3 domains". J. Biol. Chem. 273 (47 ... 1997). "Binding specificity and in vivo targets of the EH domain, a novel protein-protein interaction module". Genes Dev. 11 ( ... "The epsins define a family of proteins that interact with components of the clathrin coat and contain a new protein module". J ...
*  AP1M2
This gene encodes a subunit of the heterotetrameric adaptor-related protein complex 1 (AP-1), which belongs to the adaptor ... "Entrez Gene: AP1M2 adaptor-related protein complex 1, mu 2 subunit". Rual JF, Venkatesan K, Hao T, Hirozane-Kishikawa T, Dricot ... Fölsch H, Pypaert M, Schu P, Mellman I (Feb 2001). "Distribution and function of AP-1 clathrin adaptor complexes in polarized ... Fölsch H, Ohno H, Bonifacino JS, Mellman I (Oct 1999). "A novel clathrin adaptor complex mediates basolateral targeting in ...
*  Nerve growth factor
This pathway begins with the Trk receptor complex-recruitment of a second adaptor protein called growth factor-receptor bound ... NGF is initially in a 7S, 130-kDa complex of 3 proteins - Alpha-NGF, Beta-NGF, and Gamma-NGF (2:1:2 ratio) when expressed. This ... In this pathway, recruitment of a guanine nucleotide exchange factor by the adaptor and docking proteins leads to activation of ... Survival and PCD mechanisms are mediated through adaptor protein binding to the death domain of the p75NTR cytoplasmic tail. ...
*  Phosphatidylinositol 4-phosphate
PtdIns4P binds to the GTP-binding protein ARF and to effector proteins, including four-phosphate-adaptor protein 1 and 2 (FAPP1 ... This three molecule complex recruits proteins that need to be carried to the cell membrane. There is now evidence that PI-4-P ...
*  NUMB (gene)
Numb has demonstrated protein-protein interactions with Adaptor-related protein complex 2, alpha 1, Mdm2, L1, DPYSL2, SIAH1, ... Protein numb homolog is a protein that in humans is encoded by the NUMB gene. The protein encoded by this gene plays a role in ... Numb is localized using the Pins/GαI complex and the PAR complex of Bazooka (Par3 in mammals), Par6, and aPKC (atypical protein ... The encoded protein, whose degradation is induced in a proteasome-dependent manner by MDM2, is a membrane-bound protein that ...
*  Interferon
... both type I and type II IFNs activate a member of the CRK family of adaptor proteins called CRKL, a nuclear adaptor for STAT5 ... Interferon type I: All type I IFNs bind to a specific cell surface receptor complex known as the IFN-α/β receptor (IFNAR) that ... Some viruses can encode proteins that bind to double-stranded RNA (dsRNA) to prevent the activity of RNA-dependent protein ... the E7 protein of Human papillomavirus (HPV), and the B18R protein of vaccinia virus. Reducing IFN-α activity may prevent ...
*  AP4E1
AP-4 complex subunit epsilon-1 is a protein that in humans is encoded by the AP4E1 gene. The heterotetrameric adaptor protein ( ... Hirst J, Bright NA, Rous B, Robinson MS (1999). "Characterization of a fourth adaptor-related protein complex". Mol. Biol. Cell ... Boehm M, Aguilar RC, Bonifacino JS (2001). "Functional and physical interactions of the adaptor protein complex AP-4 with ADP- ... Dell'Angelica EC, Mullins C, Bonifacino JS (1999). "AP-4, a novel protein complex related to clathrin adaptors". J. Biol. Chem ...
Adaptor-Related Protein Complex 2, mu 1 Subunit (AP2M1) ELISA Kits  Adaptor-Related Protein Complex 2, mu 1 Subunit (AP2M1) ELISA Kits
Adaptor-Related Protein Complex 1, beta 1 Subunit ELISA Kits * Adaptor-Related Protein Complex 1 Associated Regulatory Protein ... clathrin adaptor complex AP2, mu subunit , clathrin coat adaptor protein AP50 , clathrin-associated/assembly/adaptor protein, ... Adaptor Related Protein Complex 1 sigma 1 ELISA Kits * Adaptor Protein, phosphotyrosine Interaction, PH Domain and Leucine ... clathrin coat assembly protein AP50 (CpipJ_CPIJ003697) Elisa Kit * adaptor-related protein complex 2, mu 1 subunit (Ap2m1) ...
more infohttp://www.antikoerper-online.de/egfr-signaling-pathway-pathway-26/ap2m1-elisa-kit-1886/
AP2S1 (adaptor-related protein complex 2, sigma 1 subunit) - KOMP (Knockout Mouse Project)  AP2S1 (adaptor-related protein complex 2, sigma 1 subunit) - KOMP (Knockout Mouse Project)
adaptor-related protein complex 2, sigma 1 subunit. Gene nomenclature, locus information, and GO, OMIM, and PMID associations ... OMIM: HYPOCALCIURIC HYPERCALCEMIA, FAMILIAL, TYPE III; HHC3, ADAPTOR-RELATED PROTEIN COMPLEX 2, SIGMA-1 SUBUNIT; AP2S1*Gene ...
more infohttps://www.komp.org/geneinfo.php?geneid=23444
AP2A2 (adaptor-related protein complex 2, alpha 2 subunit) - KOMP (Knockout Mouse Project)  AP2A2 (adaptor-related protein complex 2, alpha 2 subunit) - KOMP (Knockout Mouse Project)
OMIM: ADAPTOR-RELATED PROTEIN COMPLEX 2, ALPHA-2 SUBUNIT; AP2A2*Gene Ontology: Ap2a2 *Mouse Phenome DB: Ap2a2 *UCSC: Chr.7: ... adaptor-related protein complex 2, alpha 2 subunit. Synonyms: 2410074K14Rik, Adtab, alpha-adaptin C, alpha-C adaptin, L25. Gene ...
more infohttps://www.komp.org/geneinfo.php?geneid=23440
Adaptor protein complex-4 (AP-4) deficiency causes a novel autosomal recessive cerebral palsy syndrome with microcephaly and...  Adaptor protein complex-4 (AP-4) deficiency causes a novel autosomal recessive cerebral palsy syndrome with microcephaly and...
Adaptor protein complex-4 (AP-4) deficiency causes a novel autosomal recessive cerebral palsy syndrome with microcephaly and ... Adaptor protein complex-4 (AP-4) deficiency causes a novel autosomal recessive cerebral palsy syndrome with microcephaly and ... one of the four subunits of the adaptor protein complex-4 (AP-4), identified by chromosomal microarray analysis. ... Conclusion These findings, along with previous reports of human and mouse mutations in other members of the complex, indicate ...
more infohttp://jmg.bmj.com/content/early/2010/10/23/jmg.2010.082263
The central proline rich region of POB1/REPS2 plays a regulatory role in epidermal growth factor receptor endocytosis by...  The central proline rich region of POB1/REPS2 plays a regulatory role in epidermal growth factor receptor endocytosis by...
Regulation of complex formation of POB1/epsin/adaptor protein complex 2 by mitotic phosphorylation. J Biol Chem. 2000, 275 (24 ... Ward RJ, Milligan G: A key serine for the GTPase-activating protein function of regulator of G protein signaling proteins is ... The proteins recognized by the EH domain of POB1 are: Epsin [5], Nf-kB [9] and Eps15 [28, 4]. The proteins interacting with the ... Identification and characterization of a novel protein interacting with Ral-binding protein 1, a putative effector protein of ...
more infohttps://bmcbiochem.biomedcentral.com/articles/10.1186/1471-2091-9-21
Adaptor protein complex AP-2 subunit mu | definition of Adaptor protein complex AP-2 subunit mu by Medical dictionary  Adaptor protein complex AP-2 subunit mu | definition of Adaptor protein complex AP-2 subunit mu by Medical dictionary
What is Adaptor protein complex AP-2 subunit mu? Meaning of Adaptor protein complex AP-2 subunit mu medical term. What does ... Adaptor protein complex AP-2 subunit mu explanation free. ... Looking for online definition of Adaptor protein complex AP-2 ... redirected from Adaptor protein complex AP-2 subunit mu) AP2M1. A gene on chromosome 3q28 that encodes a subunit of the ... Adaptor protein complex AP-2 subunit mu , definition of Adaptor protein complex AP-2 subunit mu by Medical dictionary https:// ...
more infohttp://medical-dictionary.thefreedictionary.com/Adaptor+protein+complex+AP-2+subunit+mu
Reactome | Adaptor protein 2 complex [endolysosome membrane]  Reactome | Adaptor protein 2 complex [endolysosome membrane]
Clathrin:AP2 complex [clathrin-coated endocytic vesicle membrane] (Homo sapiens) * Adaptor protein 2 complex [endolysosome ... Clathrin:AP2 complex [clathrin-coated endocytic vesicle membrane] (Homo sapiens) * Adaptor protein 2 complex [endolysosome ... Clathrin:AP2 complex [clathrin-coated endocytic vesicle membrane] (Homo sapiens) * Adaptor protein 2 complex [endolysosome ... Clathrin:AP2 complex [clathrin-coated endocytic vesicle membrane] (Homo sapiens) * Adaptor protein 2 complex [endolysosome ...
more infohttps://reactome.org/content/detail/R-HSA-2130637
AP2B1 adaptor related protein complex 2 subunit beta 1 [Homo sapiens (human)] - Gene - NCBI  AP2B1 adaptor related protein complex 2 subunit beta 1 [Homo sapiens (human)] - Gene - NCBI
... a virally encoded peripheral membrane protein. Nef binds to the adaptor protein (AP) complexes of coated vesicles, inducing an ... adaptor related protein complex 2 subunit beta 1provided by HGNC. Primary source. HGNC:HGNC:563 See related. Ensembl: ... AP2B1 adaptor related protein complex 2 subunit beta 1 [ Homo sapiens (human) ] Gene ID: 163, updated on 6-Jan-2019 ... adapter-related protein complex 2 subunit beta. adaptin, beta 2 (beta). adaptor protein complex AP-2 subunit beta. adaptor ...
more infohttps://www.ncbi.nlm.nih.gov/gene/163
AP1M2 adaptor related protein complex 1 subunit mu 2 [Homo sapiens (human)] - Gene - NCBI  AP1M2 adaptor related protein complex 1 subunit mu 2 [Homo sapiens (human)] - Gene - NCBI
Clat_adaptor_s; Clathrin adaptor complex small chain. cl10970. Location:154 → 423. AP_MHD_Cterm; C-terminal domain of adaptor ... Clat_adaptor_s; Clathrin adaptor complex small chain. cl10970. Location:154 → 421. AP_MHD_Cterm; C-terminal domain of adaptor ... clathrin-associated adaptor medium chain mu2. golgi adaptor AP-1 47 kDa protein. golgi adaptor HA1/AP1 adaptin mu-2 subunit. mu ... a virally encoded peripheral membrane protein. Nef binds to the adaptor protein (AP) complexes of coated vesicles, inducing an ...
more infohttps://www.ncbi.nlm.nih.gov/gene/10053
adaptor related protein complex 2 subunit sigma 1 ELISA Kits | Biocompare.com  adaptor related protein complex 2 subunit sigma 1 ELISA Kits | Biocompare.com
Compare adaptor related protein complex 2 subunit sigma 1 ELISA Kits from leading suppliers on Biocompare. View specifications ... adaptor related protein complex 2 subunit sigma 1 ELISA Kits. The ELISA (enzyme-linked immunosorbent assay) is a well- ... Your search returned 34 adaptor related protein complex 2 subunit sigma 1 ELISA ELISA Kit across 3 suppliers. ... Watch Webinar: How To Get Speed and Depth in your Host Cell Protein (HCP) Analysis ...
more infohttps://www.biocompare.com/pfu/110627/soids/2-2268932/ELISA_Kit/ELISA_adaptor_related_protein_complex_2_sigma_1_subunit
Adaptor-related protein complex 2, alpha 1 - Wikipedia  Adaptor-related protein complex 2, alpha 1 - Wikipedia
Adaptor-related protein complex 2, alpha 1 has been shown to interact with DPYSL2 and NUMB. GRCh38: Ensembl release 89: ... "Entrez Gene: AP2A1 adaptor-related protein complex 2, alpha 1 subunit". Nishimura, Takashi; Fukata Yuko; Kato Katsuhiro; ... This gene encodes the alpha 1 adaptin subunit of the adaptor protein 2 (AP2 adaptors) complex found in clathrin coated vesicles ... 1996). "Interaction of Shc with adaptor protein adaptins". J. Biol. Chem. 271 (9): 5265-9. doi:10.1074/jbc.271.9.5265. PMID ...
more infohttps://en.wikipedia.org/wiki/Adaptor-related_protein_complex_2,_alpha_1
adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com | Biocompare.com  adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com | Biocompare.com
Compare adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com from leading suppliers on Biocompare ... adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com. Clear ... adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com. ... adaptor related protein complex 1 subunit gamma 2 ELISA Kits from MyBioSource.com. ...
more infohttps://www.biocompare.com/pfu/110627/soids/2-2271930/ELISA_Kit/ELISA_adaptor_related_protein_complex_1_gamma_2_subunit?vids=104355
ap3s2 Protein, adaptor-related protein complex 3, sigma 2 subunit - Creative BioMart  ap3s2 Protein, adaptor-related protein complex 3, sigma 2 subunit - Creative BioMart
Creative Biomart offer ap3s2 proteins for life sciences research. All the products are rigorously tested to meet the most ... adaptor complex sigma3B;AP-3 complex subunit sigma-3B;clathrin-associated/assembly/adaptor protein, small 4, 22-kD;AP3S3; ... AP3S2;adaptor-related protein complex 3, sigma 2 subunit;AP-3 complex subunit sigma-2;sigma3b;sigma-3B-adaptin;sigma-adaptin 3b ... Protein Function. AP3S2 has several biochemical functions, for example, protein transporter activity. Some of the functions are ...
more infohttps://www.creativebiomart.net/symbolsearch_AP3S2.htm
Sorting of the v-SNARE VAMP7 in Dictyostelium discoideum: a role for more than one Adaptor Protein (AP) complex.  Sorting of the v-SNARE VAMP7 in Dictyostelium discoideum: a role for more than one Adaptor Protein (AP) complex.
Soluble N-ethylmaleimide-sensitive-factor Attachment protein Receptors (SNAREs) participate in the specificity of membrane ... Protein Transport / physiology. Protozoan Proteins / metabolism. R-SNARE Proteins / metabolism*. Recombinant Fusion Proteins / ... Adaptor Protein Complex 2 / metabolism. Adaptor Proteins, Vesicular Transport / metabolism*. Animals. Cell Membrane / ... 0/Adaptor Proteins, Vesicular Transport; 0/Macromolecular Substances; 0/Protozoan Proteins; 0/R-SNARE Proteins; 0/Recombinant ...
more infohttp://www.biomedsearch.com/nih/Sorting-v-SNARE-VAMP7-in/18634783.html
Reciprocal regulation of signaling and endocytosis: Implications for the evolving cancer cell | JCB  Reciprocal regulation of signaling and endocytosis: Implications for the evolving cancer cell | JCB
adaptor protein complex 2. CCP. clathrin-coated pit. CLC. clathrin light chain. CME. clathrin-mediated endocytosis. DR. death ... CME is initiated when the coat-forming protein clathrin is recruited to the PM by the heterotetrameric adaptor protein complex ... GPCR-G protein-β-arrestin super-complex mediates sustained G protein signaling. Cell. 166:907-919. doi:10.1016/j.cell.2016.07. ... endosomal sorting complexes required for transport. GPCR. G protein-coupled receptor. MVB. multivesicular body. NSCLC. non- ...
more infohttp://jcb.rupress.org/content/216/9/2623
AP2M1 - AP-2 complex subunit mu - Homo sapiens (Human) - AP2M1 gene & protein  AP2M1 - AP-2 complex subunit mu - Homo sapiens (Human) - AP2M1 gene & protein
Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor ... Clathrin-associated adaptor protein (AP) complexes which can bind directly to both the clathrin lattice and to the lipid and ... protein complexes are vesicle coat components and appear to be involved in cargo selection and vesicle formation. AP-2 is ... protein components of membranes are considered to be the major clathrin adaptors contributing the CCV formation. AP-2 also ...
more infohttps://www.uniprot.org/uniprot/Q96CW1
AP2A2 Gene - GeneCards | AP2A2 Protein | AP2A2 Antibody  AP2A2 Gene - GeneCards | AP2A2 Protein | AP2A2 Antibody
Protein Coding), Adaptor Related Protein Complex 2 Alpha 2 Subunit, including: function, proteins, disorders, pathways, ... Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor ... Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor ... AP2A2 Gene(Protein Coding) Adaptor Related Protein Complex 2 Alpha 2 Subunit. ...
more infohttp://www.genecards.org/cgi-bin/carddisp.pl?gene=AP2A2
Gene Info  Gene Info
CC] clathrin adaptor complex *[CC] coated pit *[CC] membrane *[CC] membrane coat *[CC] plasma membrane *[CC] protein complex *[ ... Protein Similarities Based on Shared Motif Content. Find gene products sharing protein motifs with: NP_031484 Protein ... MF] protein C-terminus binding *[MF] protein binding *[MF] protein transporter activity BioCarta Pathways. ... BP] intracellular protein transport *[BP] protein transport *[BP] transport *[BP] vesicle-mediated transport *[CC] apical ...
more infohttps://cgap.nci.nih.gov/Genes/GeneInfo?ORG=Mm&CID=6877&LLNO=11771
Genome-Wide Expression Profiling of the Retinoschisin-Deficient Retina in Early Postnatal Mouse Development | IOVS | ARVO...  Genome-Wide Expression Profiling of the Retinoschisin-Deficient Retina in Early Postnatal Mouse Development | IOVS | ARVO...
Interferon, alpha-inducible protein. Immune response. −1.9. Mm.253090. Ap2a2 Adaptor protein complex AP-2, alpha 2 subunit. ... Interferon, alpha-inducible protein. Immune response. −1.9. Mm.253090. Ap2a2 Adaptor protein complex AP-2, alpha 2 subunit. ... TYRO protein tyrosine kinase binding protein. Immune response. 2.3c. Mm.38498. Krt1-15 Keratin complex 1, acidic, gene 15. ... TYRO protein tyrosine kinase binding protein. Immune response. 2.3c. Mm.38498. Krt1-15 Keratin complex 1, acidic, gene 15. ...
more infohttps://iovs.arvojournals.org/article.aspx?articleid=2125414
AP2A1 Gene - GeneCards | AP2A1 Protein | AP2A1 Antibody  AP2A1 Gene - GeneCards | AP2A1 Protein | AP2A1 Antibody
Protein Coding), Adaptor Related Protein Complex 2 Subunit Alpha 1, including: function, proteins, disorders, pathways, ... Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor ... Adaptor protein complexes function in protein transport via transport vesicles in different membrane traffic pathways. Adaptor ... AP2A1 Gene(Protein Coding) Adaptor Related Protein Complex 2 Subunit Alpha 1. ...
more infohttps://www.genecards.org/cgi-bin/carddisp.pl?gene=AP2A1
  • The highly-conserved Notch signaling pathway is unique, as both the Notch receptor and most of its respective ligands (canonically the DSL or Delta/Serrate/lag-2 family members) are transmembrane proteins attached to the cell surface. (antibodies-online.com)
  • Members of this Type 1 transmembrane protein family share structural characteristics including an extracellular domain consisting of multiple epidermal growth factor-like (EGF) repeats, and an intracellular domain consisting of multiple, different domain types. (antibodies-online.com)
  • Cytosolic and membrane-associated proteins involved in the recruitment of AP-1 adaptors onto the trans-Golgi network. (nih.gov)
  • The surface region interacting with to the Y-X-X-Phi motif is inaccessible in cytosolic AP-2, but becomes accessible through a conformational change following phosphorylation of AP-2 mu subunit at 'Tyr-156' in membrane-associated AP-2. (uniprot.org)
  • The AP-2 complex is a heterotetramer consisting of two large adaptins (alpha or beta), a medium adaptin (mu), and a small adaptin (sigma). (wikipedia.org)
  • The pathway maps illustrate protein interactions and regulation to provide a comprehensive picture of signaling and disease processes. (bio-rad.com)
  • Soluble N-ethylmaleimide-sensitive-factor Attachment protein Receptors (SNAREs) participate in the specificity of membrane fusions in the cell. (biomedsearch.com)
  • p>When browsing through different UniProt proteins, you can use the 'basket' to save them, so that you can back to find or analyse them later. (uniprot.org)
  • 3 4 5 6 7 Retinoschisin is almost entirely composed of a highly conserved discoidin domain frequently found in a wide range of membrane and extracellular proteins and most likely mediating cell adhesion and cellular signaling processes. (arvojournals.org)
  • Binding of AP-2 (zeige TFAP2A ELISA Kits ) to otoferlin (zeige OTOF ELISA Kits ) facilitates replenishment of release sites, for example, via speeding AZ clearance of exocytosed material, in addition to a role of AP-2 (zeige TFAP2A ELISA Kits ) in synaptic vesicle reformation. (antikoerper-online.de)
  • AP-2 seems to play a role in the recycling of synaptic vesicle membranes from the presynaptic surface. (uniprot.org)
  • Title: Proteomic analysis identifies dysfunction in cellular transport, energy, and protein metabolism in different brain regions of atypical frontotemporal lobar degeneration. (nih.gov)
  • This protein is capable of interacting with tyrosine-based sorting signals. (nih.gov)
  • Dysfunction of AP complexes has been implicated in a variety of inherited disorders, including: MEDNIK (mental retardation, enteropathy, deafness, peripheral neuropathy, ichthyosis and keratodermia) syndrome, Fried syndrome, HPS (Hermansky-Pudlak syndrome) and HSP (hereditary spastic paraplegia). (bioscirep.org)
  • Independently, PIDD was also described as a DD-containing protein with unknown function. (abcam.com)