翻訳と辞書 Words near each other ・ Pyrazine ・ 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 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 PyrC leader ： ウィキペディア英語版 PyrC leader In molecular biology, the PyrC leader is a ''cis''-regulatory RNA element found at the 5' of the PyrC mRNA in Enterobacteria. The PyrC gene encodes Dihydroorotase, an enzyme involved in pyrimidine biosynthesis. The PyrC leader regulates expression of PyrC. Translation initiation can occur at four different sites within this leader sequence, under high CTP conditions the translation initiation site is upstream of that used under low CTP 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 PyrC. Under low CTP 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 PyrC 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「PyrC 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.