翻訳と辞書 Words near each other ・ Pyrazinoic acid ・ Pyrazolam ・ Pyrazole ・ Pyrazolidine ・ Pyrazoline ・ Pyrazolone ・ Pyrazolopyridine ・ Pyrazolopyrimidine ・ Pyrazolylalanine synthase ・ Pyrazophos ・ Pyrazus ・ Pyrazus ebeninus ・ Pyrazus eriensis ・ Pyrbaum ・ PyrC leader ・ PyrD leader ・ Pyre ・ Pyre (comics) ・ Pyrearinus ・ Pyrearinus candelarius ・ Pyree, New South Wales ・ Pyreferra ・ Pyreinoye gas field ・ Pyreliophorus ・ Pyrellia ・ Pyremius ・ Pyrena ・ Pyrenacantha ・ Pyrenacantha cordicula ・ Pyrenacantha malvifolia 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 PyrD leader ： ウィキペディア英語版 PyrD leader In molecular biology, the PyrD leader is a ''cis''-regulatory RNA element found at the 5' of the PyrC mRNA in Proteobacteria. The PyrD gene encodes dihydroorotate dehydrogenase, an enzyme involved in pyrimidine biosynthesis. The PyrD leader regulates expression of PyrD. Translation initiation can occur at more than one different site within this leader sequence, under high CTP or GTP conditions the translation initiation site is upstream of that used under low CTP/GTP conditions, additional cytosine residues are incorporated into the mRNA resulting in the formation of an RNA hairpin. This hairpin blocks ribosome-binding at the Shine-Dalgarno sequence, and therefore blocks expression of PyrD. Under low CTP/GTP conditions the initiation site is further downstream and does not result in hapirpin formation, so the ribosome can bind to the Shine-Dalgarno sequence and PyrD is expressed. ==Further reading== * * * 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「PyrD leader」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.