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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク 5β-reductase ： ウィキペディア英語版 5-beta-reductase Delta4-3-oxosteroid 5beta-reductase (, ''3-oxo-Delta4-steroid 5beta-reductase'', ''5beta-reductase'', ''androstenedione 5beta-reductase'', ''cholestenone 5beta-reductase'', ''cortisone 5beta-reductase'', ''cortisone beta-reductase'', ''cortisone Delta4-5beta-reductase'', ''steroid 5beta-reductase'', ''testosterone 5beta-reductase'', ''Delta4-3-ketosteroid 5beta-reductase'', ''Delta4-5beta-reductase'', ''Delta4-hydrogenase'', ''4,5beta-dihydrocortisone:NADP+ Delta4-oxidoreductase'', ''3-oxo-5beta-steroid:NADP+ Delta4-oxidoreductase'') is an enzyme with system name ''5beta-cholestan-3-one:NADP+ 4,5-oxidoreductase''. This enzyme catalyses the following chemical reaction : (1) 5beta-cholestan-3-one + NADP+ $\backslash rightleftharpoons$ cholest-4-en-3-one + NADPH + H+ : (2) 17,21-dihydroxy-5beta-pregnane-3,11,20-trione + NADP+ $\backslash rightleftharpoons$ cortisone + NADPH + H+ The human enzyme efficiently acts on progesterone, androstenedione, 17alpha-hydroxyprogesterone and testosterone to 5beta-reduced metabolites. It can also act on aldosterone, corticosterone and cortisol, to some extent. == 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「5-beta-reductase」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.