title: Control of arginine biosynthesis in Escherichia coli: inhibition of arginyl-transfer ribonucleic acid synthetase activity.
abstract: In this study, we have extended our earlier observations indicating in vitro inhibition of arginyl-transfer ribonucleic acid synthetase (EC 6.1.13, arginine: soluble ribonucleic acid ligase, adenosine monophosphate) activity by the arginine biosynthetic precursors ornithine, citrulline, and argininosuccinate. Furthermore, we report evidence which suggest that this enzyme activity is inhibited by these arginine precursors in vivo and that this inhibition of activity results in a derepression of arginine biosynthesis.
mesh_terms: D000604:Amino Acyl-tRNA Synthetases / Q000037:antagonists & inhibitors* / Q000378:metabolism; D001120:Arginine / Q000378:metabolism*; D002247:Carbon Isotopes; D002474:Cell-Free System; D002845:Chromatography; D002848:Chromatography, DEAE-Cellulose; D002956:Citrulline / Q000494:pharmacology; D004794:Enzyme Repression; D004926:Escherichia coli / Q000201:enzymology* / Q000378:metabolism; D006882:Hydroxyapatites; D009952:Ornithine / Q000494:pharmacology; D009954:Ornithine Carbamoyltransferase / Q000378:metabolism; D013386:Succinates / Q000494:pharmacology
chemical_list: D002247:Carbon Isotopes; D006882:Hydroxyapatites; D013386:Succinates; D002956:Citrulline; D001120:Arginine; D009952:Ornithine; D009954:Ornithine Carbamoyltransferase; D000604:Amino Acyl-tRNA Synthetases