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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 20α,22R-Dihydroxycholesterol ： ウィキペディア英語版 20α,22R-Dihydroxycholesterol 20α,22''R''-Dihydroxycholesterol, or (3β)-cholest-5-ene-3,20,22-triol is an endogenous, metabolic intermediate in the biosynthesis of the steroid hormones from cholesterol. Cholesterol ((3β)-cholest-5-en-3-ol) is hydroxylated by cholesterol side-chain cleavage enzyme (P450scc) to form 22''R''-hydroxycholesterol, which is subsequently hydroxlated again by P450scc to form 20α,22''R''-dihydroxycholesterol, and finally the bond between carbons 20 and 22 is cleaved by P450scc to form pregnenolone ((3β)-3-hydroxypregn-5-en-20-one),〔〔 the precursor to the steroid hormones. == See also == * 22''R''-Hydroxycholesterol * 27-Hydroxycholesterol 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「20α,22R-Dihydroxycholesterol」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.