| arginine-trna ligase | <enzyme> An enzyme that activates arginine with its specific transfer RNA. Chemical name: L-Arginine:tRNA(Arg)ligase (AMP-forming) Registry number: EC 6.1.1.19 (12 Dec 1998) |
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| arginine vasopressin | [8-arginine]vasopressin; [Arg8]vasopressin;vasopressin containing an arginyl residue in position 8 (as in chickens and most mammals, including man); porcine vasopressin has a lysyl residue at position 8. All are vasopressors. Synonym: argipressin. (05 Mar 2000) |
| arginine vasotocin | Vasotocin with arginyl residue at position 8 (identical with arginine oxytocin). See: arginine vasopressin. (05 Mar 2000) |
| beta-alanyl-arginine hydrolase | <enzyme> Also hydrolyzes carnosine, at a lower rate; requires mn2+; inhibited by bestatin; stabilised by sulfhydryl reagents Registry number: EC 3.4.13.- Synonym: ala-arg hydrolase (26 Jun 1999) |
| complement 5a, des-arginine | Complement 5a with the carboxy-terminal arginine removed. The arginine is rapidly cleaved from the c5a fragment during complement activation by carboxypeptidase b present in normal human serum. C5a des-arg shows complete loss of spasmogenic activity though it retains some chemotactic ability. (12 Dec 1998) |
| protein-arginine n-methyltransferase | <enzyme> An enzyme that catalyses the methylation of arginine residues of proteins to yield n-mono- and n,n-dimethylarginine. This enzyme is found in many organs, primarily brain and spleen. Chemical name: S-Adenosyl-L-methionine:protein-L-arginine N-methyltransferase Registry number: EC 2.1.1.23 (12 Dec 1998) |
| NAD(p)-arginine ADP-ribosyltransferase | <enzyme> An enzyme that catalyses the transfer of the ADP-ribose moiety from NAD to specific protein substrates with agmatine, arginine-type compounds, or guanidine as acceptors. This reaction can be catalyzed by prokaryotic and eukaryotic enzyme systems. Mono-ADP-ribosylation is a mechanism of action common to several bacterial toxins. It effects profound changes in cellular metabolism, such as activation of adenylate cyclase, regulation of protein synthesis at the level of elongation factor 2, and ion transport across biological membranes. Chemical name: NAD(+)-L-arginine ADP-D-ribosyltransferase Registry number: EC 2.4.2.31 (12 Dec 1998) |
| N-arginine dibasic convertase | <enzyme> Catalyses cleavage at the n-terminus of arginine residues in dibasic stretches of proteins; located in brain cortex; genbank l27124 Registry number: EC 3.4.24.- Synonym: nrd convertase, n-arg dibasic convertase (26 Jun 1999) |
| AMP-activated protein kinase kinase | <enzyme> An endogenous kinase kinase; reactivates the inactive form of AMP-activated protein kinase (AMP-pk); phosphorylates the 63-kD subunit of AMP-pk Registry number: EC 2.7.1.- Synonym: AMP-pk reactivator, hmg CoA reductase kinase kinase (26 Jun 1999) |
| calmodulin-dependent protein kinase IV kinase | <enzyme> Phosphorylates and activates cam-kinase iv; from brain Registry number: EC 2.7.10.- Synonym: cam-kinase iv kinase (26 Jun 1999) |
| MAPKAP kinase-2 reactivating kinase | <enzyme> A mapk-like enzyme; homologous to p42(mapk) and p44(mapk); activated by phosphorylation of serine/threonine and tyrosine residues Registry number: EC 2.7.1.- Synonym: mapkap kinase-2 rk (26 Jun 1999) |
| ribosomal protein S6 kinase kinase | <enzyme> Isolated from unfertilised xenopus eggs; a 41 kD enzyme that is associated, in vivo, with phosphorylation on threonine and tyrosine residues and, in vitro, with phosphorylation on serine as well Registry number: EC 2.7.1.- Synonym: rsk kinase (26 Jun 1999) |
| protein kinase B kinase | <enzyme> Phosphorylates and activates protein kinase b on threonine-308; requires phosphatidylinositol-3,4,5-trisphosphate Registry number: EC 2.7.10.- Synonym: upstream kinase, pkb kinase (26 Jun 1999) |
| leukocyte tyrosine kinase receptor tyrosine kinase | <enzyme> May be receptor for pre-b lymphocyte growth or differentiation factor; aa sequence given in first source Registry number: EC 2.7.1.- Synonym: ltk receptor tyrosine kinase, ltk receptor tk, ltk protein, leukocyte tyrosine kinase (ltk) (26 Jun 1999) |
| acetate kinase | <enzyme> An enzyme that catalyses reversibly the phosphorylation of acetate in the presence of a divalent cation and ATP with the formation of acetylphosphate and ADP. It is important in the glycolysis process. Chemical name: ATP:acetate phosphotransferase Registry number: EC 2.7.2.1 (12 Dec 1998) |