翻訳と辞書 Words near each other ・ RNA polymerase ・ RNA polymerase I ・ RNA polymerase II ・ RNA polymerase II holoenzyme ・ RNA polymerase II subunit B4 ・ RNA polymerase III ・ RNA polymerase IV ・ RNA polymerase V ・ RNA recognition motif ・ RNA silencing ・ RNA spike-in ・ RNA splicing ・ RNA thermometer ・ RNA Tie Club ・ RNA transfection ・ RNA triphosphatase ・ RNA uridylyltransferase ・ RNA virus ・ RNA world ・ RNA-3'-phosphate cyclase ・ RNA-based evolution ・ RNA-binding protein ・ RNA-binding protein database ・ RNA-dependent RNA polymerase ・ RNA-Directed DNA Methylation ・ RNA-induced silencing complex ・ RNA-induced transcriptional silencing ・ RNA-OUT ・ RNA-Seq ・ RNA22 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 RNA triphosphatase ： ウィキペディア英語版 RNA triphosphatase In molecular biology, RNA 5'-triphosphatases (RTPases) are phosphatases that cleave the 5'-terminal γ-β phosphoanhydride bond of nascent messenger RNA molecules, thereby releasing a phosphate group. They generate 5'-diphosphate-ended mRNA from 5'-triphosphate-ended precursor mRNA molecules. mRNA guanylyltransferase then adds a backwards guanosine monophosphate (GMP) group from GTP, generating pyrophosphate, and mRNA (guanine-N7-)-methyltransferase methylates the guanine to form the final 5'-cap structure. There are two families of RTPases known so far: *the metal-dependent family. Yeast,〔 protozoan, and viral〔 RTPases require a metal co-factor for their activity, which is most often either Mg2+ or Mn2+. This class of enzymes is also able to hydrolyze free nucleoside triphosphates in the presence of either Mn2+ or Co2+.〔 *the metal-independent family. These groups do not require metals for their activity, and some enzymes have been shown to be inactivated in the presence of metal ions. These enzymes are very much similar to protein tyrosine phosphatases in their structure and mechanism. This family includes RTPases from mammals, plants, and other higher eukaryotes,〔 and is structurally and mechanistically different from the metal-dependent RTPase family.〔〔〔 ==See also== * Transcription (genetics) * Five-prime cap 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「RNA triphosphatase」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.