翻訳と辞書 Words near each other ・ Histeridomyces ・ Histerinae ・ Histeroidea ・ Histhan Mandali ・ Histia ・ Histia flabellicornis ・ Histiaea ・ Histiaeotis ・ Histiaeus ・ Histidine ・ Histidine (data page) ・ Histidine ammonia-lyase ・ Histidine decarboxylase ・ Histidine kinase ・ Histidine N-acetyltransferase ・ Histidine operon leader ・ Histidine transaminase ・ Histidine-tryptophan-ketoglutarate ・ Histidinemia ・ Histidine—tRNA ligase ・ Histidinol dehydrogenase ・ Histidinol-phosphatase ・ Histidinol-phosphate transaminase ・ Histiobranchus ・ Histiocyte ・ Histiocytic sarcoma ・ Histiocytoma ・ Histiocytoma (dog) ・ Histiocytosis ・ Histiodraco velifer 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 Histidine operon leader ： ウィキペディア英語版 Histidine operon leader The Histidine operon leader is an RNA element found in the bacterial histidine operon. At least 6 amino acid operons are known to be regulated by attenuation. In each a leader sequence of 150-200 bp is found upstream of the first gene in the operon. This leader sequence can assume two different secondary structures known as the terminator and the anti-terminator structure. In each case the leader also codes for very short peptide sequence that is rich in the end product amino acid of the operon. The terminator structure is recognised as a termination signal for RNA polymerase and the operon is not transcribed. This structure forms when the cell has an excess of the regulatory amino acid and ribosome movement over the leader transcript is not impeded.〔 When there is a deficiency of the charged tRNA of the regulatory amino acid the ribosome translating the leader peptide stalls and the antiterminator structure can form. This allows RNA polymerase to transcribe the operon.〔 ==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「Histidine operon 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.