TY - JOUR. T1 - Biochemical comparison of arginine kinase allozymes in Drosophila melanogaster. AU - Chien, Yi-Chih. AU - Collier, Glen E.. PY - 1997/10/1. Y1 - 1997/10/1. N2 - Biochemical comparison of arginine kinase allozymes in Drosophila melanogaster. Zoological Studies 36(4): 277-287. ARKB is a rare arginine kinase allozyme found in natural populations of Drosophila melanogaster. To test whether the rarity of this allozyme could be due to its biochemical impairment relative to the common allozyme, biochemical properties such as catalytic efficiency and conformational stability of the rare (ARKB) and the common (ARKA) allozymes were compared in this study. Both allozymes were purified by ammonium sulfate fractionation, DEAE-ion-exchange column, Blue-Sepharose, and S-300 gel filtration, to yield a single coomassie-blue band on SDS-polyacrylamide gels. ARKA has a higher Vmax or Vmax/Km than ARKB at 18 or 29 °C, but there are no differences at 24 °C. In general, ARKA is catalytically more ...
Phosphagen (guanidino) kinases, including creatine kinase (CK), arginine kinase (AK), taurocyamine kinase (TK), lombricine kinase (LK), glycocyamine kinase (GK), and hypotaurocyamine kinase (HTK), are enzymes that catalyze the reversible transfer of the γ-phosphoryl group of adenosine triphosphate (ATP) to naturally occuring guanidino compounds such as creatine, arginine, yelding adenosine diphosphate (ADP) and a phosphorylated guanidine typically referred to as phosphagen (phosphocreatine, phosphoarginine and etc). Members of this enzyme family play a key role in animals as ATP-buffering systems in cells that display high and variable rates of ATP turnover. Phosphagen kinases have been found in all animal species and in some protozoa, such as trypanosomes, choanoflagellates, and the ciliates, Paramecium tetraurelia, Paramecium caudatum, and Tetrahymena. Eukaryotic phosphagen kinases consist of a small, ~100-residue, α-helical N-terminal domain and a larger, 250+-residue, C-terminal α/β ...
The PDB archive contains information about experimentally-determined structures of proteins, nucleic acids, and complex assemblies. As a member of the wwPDB, the RCSB PDB curates and annotates PDB data according to agreed upon standards. The RCSB PDB also provides a variety of tools and resources. Users can perform simple and advanced searches based on annotations relating to sequence, structure and function. These molecules are visualized, downloaded, and analyzed by users who range from students to specialized scientists.
AL009126.MCSB Location/Qualifiers FT CDS 102484..103575 FT /codon_start=1 FT /transl_table=11 FT /gene="mcsB" FT /locus_tag="BSU_00850" FT /old_locus_tag="BSU00850" FT /product="protein arginine kinase" FT /function="16.3: Control" FT /EC_number="2.7.3.3" FT /note="Evidence 1a: Function from experimental evidences in FT the studied strain; PubMedId: 16163393, 17380125, 19189946, FT 21622759, 25610436, 27749819; Product type e : enzyme" FT /db_xref="EnsemblGenomes-Gn:BSU00850" FT /db_xref="EnsemblGenomes-Tr:CAB11861" FT /db_xref="GOA:P37570" FT /db_xref="InterPro:IPR000749" FT /db_xref="InterPro:IPR014746" FT /db_xref="InterPro:IPR022414" FT /db_xref="InterPro:IPR022415" FT /db_xref="InterPro:IPR023660" FT /db_xref="SubtiList:BG10147" FT /db_xref="UniProtKB/Swiss-Prot:P37570" FT /experiment="publication(s) with functional evidences, FT PMID:16163393, 17380125, 19189946, 21622759, 25610436, FT 27749819" FT /protein_id="CAB11861.1" FT /translation="MSLKHFIQDALSSWMKQKGPESDIVLSSRIRLARNFEHIRFPTRY FT ...
p23 is a member of the p24 family of proteins. (A) cDNA-derived amino acid sequence of the BHKp23 precursor. The predicted cleavage site for the signal peptid
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1. Both the monomer arginine kinase from lobster muscle and the dimer arginine kinase from Holothuria forskali catalyse the ATP-ADP partial exchange reaction at rates equal to 3 and 0.6% of the normal rate of transphosphorylation respectively. The Mg2+-nucleotide complex is the substrate for this as it is for the kinase reaction. 2. Analogues of arginine inhibit the exchange reaction of the lobster enzyme but enhance that of the Holothuria enzyme. 3. With the lobster enzyme NO3- has no effect on the exchange reaction alone and inhibit only slightly the apparent enhancement of the exchange reaction produced by the addition of arginine. This is compatible with previous findings for this enzyme that formation of the anion-stabilized dead-end complex, enzyme-arginine-MgADP-NO3-, does not occur to any marked degree. 4. About 80% of the ADP-ATP exchange reaction of the lobster enzyme remains after inhibition with iodoacetamide. This is further decreased to 65% by the addition of L-arginine, indicating ...
Get information, facts, and pictures about phosphagen at Encyclopedia.com. Make research projects and school reports about phosphagen easy with credible articles from our FREE, online encyclopedia and dictionary.
InterPro provides functional analysis of proteins by classifying them into families and predicting domains and important sites. We combine protein signatures from a number of member databases into a single searchable resource, capitalising on their individual strengths to produce a powerful integrated database and diagnostic tool.
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Arginine HCL 400g, ALLMAX Nutrition Precursor for synthesis of Nitric Oxide (NO)* Promotes muscle mass* Arginine is considered a semi-essential amino acid. What that means is the body produces Arginine normally, but sometimes the body needs more than is available and Arginine needs to be supplemented. Food sources suc
I want to argue with the homeowner, but I know it will get me nowhere. Instead I close my fist around the hard stones he gave me and walk away. Be thankful the ingrates paid at all, Aksá would say. Usha always underpaid us. Aksá said I would get used to it, but I have been working two summers now and still I am angry. I have been working two summers now and I am more angry than ever.
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Arginine kinase (AK), an important member of the phosphokinase family, is involved in temporal and spatial adenosine triphosphate (ATP) buffering systems. AK plays an important role in physiological function and metabolic regulations, in particular tissues with high and fluctuating energy demands. In present study, four AK genes were firstly identified from Yesso scallop (Patinopecten yessoensis) genome, respectively named PyAK1-4. PyAKs have highly conserved structures with a six-exon/five-exon structure, except for PyAK3. PyAK3 contains an unusual two-domain structure and a "bridge intron" between the two domains, which may originate from gene duplication and subsequent fusion. Phylogenetic analysis showed that all PyAKs belonged to an AK supercluster together with other AK proteins from Mollusca, Platyhelminthes, Arthropoda, and Nematode. A transcriptome database demonstrated that PyAK3 and PyAK4 were the main functional executors with high expression level during larval development and in ...
Summary is not available for the mouse gene. This summary is for the human ortholog.] This gene encodes a member of the 3-oxoacid CoA-transferase gene family. The encoded protein is a homodimeric mitochondrial matrix enzyme that plays a central role in extrahepatic ketone body catabolism by catalyzing the reversible transfer of coenzyme A from succinyl-CoA to acetoacetate. Mutations in this gene are associated with succinyl CoA:3-oxoacid CoA transferase deficiency. [provided by RefSeq, Jul 2008 ...
The American cockroach was introduced to the United States from Africa as early as 1625. They belong to the Kingdom: Animalia, Phylum: Arthropoda, Class: Insecta (Insecta: Blattodea: Blattidae), Order: Dictyoptera, and Family: Blattidae. Its common name is American cockroach and scientific name is Periplaneta Americana (Linnaeus). American cockroaches are normally between one and one and a half inches in length. They are oval shaped and reddish-brow with yellow fringes on the area of the body behind the head as adults. They hide in dark crevices during the day, which could include: sewer and drainage systems, cracks and crevices of a house, steam tunnels, large institutional buildings and basements. They emerge at night to hunt for food. Theyll eat pretty much anything. Although it prefers sweets, they have been observed eating paper, boots, hair, bread, fruit, book bindings, fish, peanuts, old rice, putrid sake, the soft part on the inside of animal hides, cloth and dead insects. American ...
In an effort to better understand the life cycle of the blue crab and aid with species restoration, this young naturalist studied the effect of cell area and depth on their growth.
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Ornithine carbamoyltransferase (OTC) catalyzes the reversible transfer of the carbamoyl group from carbamoyl phosphate (CP) to the Nε atom of L-ornithine (ORN) to produce L-citrulline. There are two types of the enzyme - anabolic (aOTC) and catabolic (cOTC). Anabolic OTCs participate in the urea cycle and L-arginine biosynthesis. Catabolic OTCs are part of the catabolic arginine deiminase pathway found in a number of microorganisms. The reported structure is for the anabolic enzyme from pathogen Vibrio vulnificus. The structure has three monomers in the asymmetric unit which form the physiologically active trimer. One of the three enzyme subunits is entrapped in a complex with its first substrate carbamoyl phosphate and its inhibitor arginine. That complex provides additional structural insights into mechanism of inhibition by arginine. It shows that binding of CP together with arginine causes closure of interdomain cleft and brings catalytic loops K*STRTR, B2-H3 and SMG into the catalytic site ...
AK1 [ENSP00000362271]. Adenylate monophosphate kinase; Catalyzes the reversible transfer of the terminal phosphate group between ATP and AMP. Also displays broad nucleoside diphosphate kinase activity. Plays an important role in cellular energy homeostasis and in adenine nucleotide metabolism; Belongs to the adenylate kinase family. AK1 subfamily.. Synonyms: AK1, AK1p, hAK1, AK1-008, AK1-009 .... Linkouts: STRING Pharos UniProt ...
Broad-specificity nucleoside monophosphate (NMP) kinase that catalyzes the reversible transfer of the terminal phosphate group between nucleoside triphosphates and monophosphates.
Aspartate transaminase (AST) or aspartate aminotransferase, also known as AspAT/ASAT/AAT or serum glutamic oxaloacetic transaminase (SGOT), is a pyridoxal phosphate (PLP)-dependent transaminase enzyme (EC 2.6.1.1) that was first described by Arthur Karmen and colleagues in 1954. AST catalyzes the reversible transfer of an α-amino group between aspartate and glutamate and, as such, is an important enzyme in amino acid metabolism. AST is found in the liver, heart, skeletal muscle, kidneys, brain, and red blood cells. Serum AST level, serum ALT (alanine transaminase) level, and their ratio (AST/ALT ratio) are commonly measured clinically as biomarkers for liver health. The tests are part of blood panels. Aspartate transaminase catalyzes the interconversion of aspartate and α-ketoglutarate to oxaloacetate and glutamate. Aspartate (Asp) + α-ketoglutarate ↔ oxaloacetate + glutamate (Glu) As a prototypical transaminase, AST relies on PLP (Vitamin B6) as a cofactor to transfer the amino group from ...
To enable the resolution of deep phylogenetic divergence in Scolytinae and closely related weevils, several new molecular markers were screened for their phylogenetic potential. The nuclear protein encoding genes, CAD and Arginine Kinase, were particularly promising and will be added to future phylogenetic studies in combination with 28S, COI, and Elongation Factor 1α. The combined analysis of multiple molecular markers and wide taxon sampling is expected to resolve many previously unresolved nodes in scolytine phylogeny, but a completely resolved topology seems dependent on the inclusion of a large number of morphological characters. A well founded phylogeny will provide a powerful framework for testing evolutionary hypotheses on habitat selection and reproductive biology. ...
RNA interference (RNAi), a gene-silencing mechanism that involves providing double-stranded RNA molecules that match a specific target gene sequence, is now widely used in functional genetic studies. The potential application of RNAi-mediated control of agricultural insect pests has rapidly become evident. The production of transgenic plants expressing dsRNA molecules that target essential insect genes could provide a means of specific gene silencing in larvae that feed on these plants, resulting in larval phenotypes that range from loss of appetite to death. In this report, we show that the tomato leafminer (Tuta absoluta), a major threat to commercial tomato production, can be targeted by RNAi. We selected two target genes (Vacuolar ATPase-A and Arginine kinase) based on the RNAi response reported for these genes in other pest species. In view of the lack of an artificial diet for T. absoluta, we used two approaches to deliver dsRNA into tomato leaflets. The first approach was based on the uptake of
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Three energy systems -- commonly referred to as metabolic pathways -- are responsible for the chemical reactions within cells and tissues during exercise and sports. These energy systems include the phosphagen, glycolytic and oxidative pathways.
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Evidence has been presented for the possible transport function of conjugated roach plasma proteins during molting. Extensive changes in these proteins are evident during the premolt stage. The remainder of the instar appears to be devoted to a gradu
This page is a collection of people that are attached to a branch of the Tree of Life.. For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.. close box ...
The hole area o f the TK series polleys (core part) has not been processed, it is delivered in accordance with the size you send as a sample.. • Series (TAL -TEL-TGM-THA-TMO-TSC- TSH- TSİ- TSO-TTH-TTO- TZ) are ready to be you as processed to you as processed according to the original dimensions. Prior to your request, checking the dimensions indicated in the tables in the following pages is important for the absence of errors.. • Serbs (AL -AO - BA - FA - HA - HY- KO - LM-MO - NU- Si) are ready to be delivered to you as processed according to the original dimensions. Prior to your request checking the dimensions indicated in the tables in the following pages is important for the absence of errors. • They are machine-mo hr pulleys. • The material of the pulleys b ductile iron GGG40- ...
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Arginine: | | | Arginine | | | | ||| ... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled.
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Arginine is one of the compounds responsible for helping blood vessels contract and expand, helping to control blood flow. Most people get all the arginine they need by eating a healthy...
Suurepärane arginiini allikas. See aitab Sind kasvatada lihasmassi ja vabaneda rasvast. Suurendab lämmastikoksiidide taset organiismis, mis omakorda märgatavalt suurendab verevoolu ja hapniku vedamist iga rakule. Mega Arginine stimuleerib immuunsüsteem...
Blue crabs Callinectes sapidus Rathbun, 1896 support large commercial and recreational fisheries along the Atlantic coast and in the Gulf of Mexico (GOM). Female blue crabs are traditionally believed to produce one to six broods in their lifetime. However, recent evidence has shown that females have the ability to spawn up to eight broods in a single spawning season, with as many as 18 broods over their lifespan. In this study, fecundity and egg diameter were examined by brood class (primiparous, multiparous) in the spring and summer/fall. Mean carapace width of females was significantly different between brood class and season, with the largest females in the spring. There was a positive relationship between fecundity and carapace width. Although primiparous spring females were the most fecund (3.2 ± 1.5 million eggs), no statistically significant differences in fecundity by brood class and season were found. Loss of eggs occurred during embryonic development; primiparous females lost ~0.9 million
General aspects of the life history of the blue crab (Callinectes sapidus Rathbun) were described in the early part of the 20th century, but the larval biology of the species has remained enigmatic until recently. In the waters off the Mid-Atlantic States (MAB), spawning occurs throughout the summer with a peak in late July and early August. Gravid females migrate to the mouths of estuaries, and newly hatched larvae are quickly exported to the adjacent shelf. Development through seven zoea stages takes place in the open waters of the continental shelf and requires 4 to 5 weeks. Zoea larvae remain in surface waters, but not necessarily in the neuston, throughout development. Retention in the MAB is controlled by wind-driven, northward-flowing water located between 20 and 60 km off the coast. This northward current is between a strong, southward coastal current that hugs the immediate shoreline and a more diffuse southward flow along the outer continental shelf. Re-invasion of the estuaries of the ...
TY - JOUR. T1 - Oxidative modification and aggregation of creatine kinase from aged mouse skeletal muscle.. AU - Nuss, Jonathan E.. AU - Amaning, James K.. AU - Bailey, C. Eric. AU - DeFord, James H.. AU - Dimayuga, Vincent L.. AU - Rabek, Jeffrey P.. AU - Papaconstantinou, John. PY - 2009/6/1. Y1 - 2009/6/1. N2 - Creatine kinase catalyzes the reversible transfer of the gamma phosphate from ATP to creatine forming the high energy compound creatine phosphate. Muscle creatine kinase (CKm) activity maintains energetic homeostasis as variations in energy requirements dictate that ATP be readily available. Recent studies suggest that CKm activity is altered during aging. Proteomic analyses have shown that CKm is 3-nitrotyrosine (3-NT) modified and carbonylated in aged rodent skeletal muscle. However, it remains unknown if these modifications affect its structure and activity. To address this we characterized oxidatively modified CKm from the quadriceps of young, middle-aged, and aged mice. Our data ...