翻訳と辞書 Words near each other ・ Argo-Saronic Gulf ・ Argoat ・ Argoba Nationality Democratic Organization ・ Argobba ・ Argobba language ・ Argobba people ・ Argobba special woreda (Afar) ・ Argobba special woreda (Amhara) ・ Argobuccinum ・ Arginine decarboxylase ・ Arginine deiminase ・ Arginine glutamate ・ Arginine kinase ・ Arginine N-succinyltransferase ・ Arginine racemase ・ Arginine repressor ArgR ・ Arginine vasopressin receptor 1A ・ Arginine vasopressin receptor 1B ・ Arginine vasopressin receptor 2 ・ Argininemia ・ Arginine—pyruvate transaminase ・ Arginine—tRNA ligase ・ Argininosuccinate lyase ・ Argininosuccinate synthase ・ Argininosuccinate synthetase 1 ・ Argininosuccinic acid ・ Argininosuccinic aciduria ・ Argintari River ・ Argintul River ・ Argintărie River Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Arginine repressor ArgR ： ウィキペディア英語版 Arginine repressor ArgR In molecular biology, the arginine repressor (ArgR) is a repressor of prokaryotic arginine deiminase pathways. The arginine dihydrolase (AD) pathway is found in many prokaryotes and some primitive eukaryotes, an example of the latter being ''Giardia lamblia'' (Giardia intestinalis). The three-enzyme anaerobic pathway breaks down L-arginine to form 1 mol of ATP, carbon dioxide and ammonia. In simpler bacteria, the first enzyme, arginine deiminase, can account for up to 10% of total cell protein.〔 Most prokaryotic arginine deiminase pathways are under the control of a repressor gene, termed ArgR. This is a negative regulator, and will only release the arginine deiminase operon for expression in the presence of arginine. The crystal structure of apo-ArgR from ''Bacillus stearothermophilus'' has been determined to 2.5A by means of X-ray crystallography. The protein exists as a hexamer of identical subunits, and is shown to have six DNA-binding domains, clustered around a central oligomeric core when bound to arginine. It predominantly interacts with A.T residues in ARG boxes. This hexameric protein binds DNA at its N terminus to repress arginine biosyntheis or activate arginine catabolism. Some species have several ArgR paralogs. In a neighbour-joining tree, some of these paralogous sequences show long branches and differ significantly from the well-conserved C-terminal region. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arginine repressor ArgR」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.