翻訳と辞書 Words near each other ・ Niguza eucesta ・ Niguza oculita ・ Niguza spiramioides ・ Nigâr Hanım ・ Nigüelas ・ Nigüella ・ NIH (disambiguation) ・ Nih (town) ・ NIH classification of headaches ・ NIH Director's New Innovator Award ・ NIH funding of IBS Research ・ NIH Intramural Research Program ・ NIH Office of Technology Transfer ・ NIH Public Access Policy ・ NIH Record ・ NIH shift ・ NIH Toolbox ・ Niha ・ Niha Bekaa ・ Niha Chouf ・ Niha, Syria ・ Nihad ・ Nihad Al Boushi ・ Nihad Awad ・ Nihad Hasanović ・ Nihad Hihat ・ Nihad Hrustanbegovic ・ Nihad Milak ・ Nihad Nadam ・ Nihad Đedović 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 NIH shift ： ウィキペディア英語版 NIH shift An NIH shift is a chemical rearrangement where a hydrogen atom on an aromatic ring undergoes an intramolecular migration primarily during a hydroxylation reaction. This process is also known as a 1,2-hydride shift. These shifts are often studied and observed by isotopic labeling. An example of an NIH shift is shown below: In this example, a hydrogen atom has been isotopically labeled using deuterium (shown in red). As the hydroxylase adds a hydroxyl (the −OH group), the labeled site shifts one position around the aromatic ring relative to the stationary methyl group (−CH3). Several hydroxylase enzymes are believed to incorporate an NIH shift in their mechanism, including 4-hydroxyphenylpyruvate dioxygenase and the tetrahydrobiopterin dependent hydroxylases. The name ''NIH shift'' arises from the US National Institutes of Health from where studies first reported observing this transformation. ==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「NIH shift」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.