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李小冬

金虫 (小有名气)

[求助] 专业点的哦,CYP450的 很简单 来看看啊!

Cytochrome P450 monooxygenases (P450; CYP) are a superfamily of hemecontaining enzymes which catalyze the molecular scission of the O--O bond of
atmospheric dioxygen using reducing equivalents supplied by NADPH/NADH
and channeled to the P450 heme Fe center almost always through ancillary redox
partner proteins [1,2]. Generally, one atom is incorporated into the substrate molecule
and the other oxygen atom is reduced to a water molecule (Scheme I). The array
of oxidation reactions catalyzed by the P450 enzyme superfamily is unprecedented
in biological chemistry.
哎呀呀
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李小冬

金虫 (小有名气)

答的好有小红花,给各位来点参考,
细胞色素P450 (cytochromes P450)是一族在温和条
件下能够把底物中反应惰性的碳氢键氧化的单加氧酶,
哎呀呀
2楼2013-06-09 21:30:30
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板凳匪徒

新虫 (初入文坛)

【答案】应助回帖

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李小冬: 金币+20, 翻译EPI+1, ★★★★★最佳答案 2013-07-24 09:32:46
细胞色素P450单氧酶(P450;CYP)是一个含血红素酶的超家族,这种酶能利用NADPH/NADH提供的还原力催化大气分子氧中O-O键的分子断链,并且几乎都是通过P450血红素铁中心辅助氧化还原伴侣蛋白来进行引导的[1,2]。一般情况下,单个原子包含在基质分子中而其他氧原子则还原为水分子(方案I)。P450酶超家族催化的该系列的氧化反应在生物化学中是前所未有的。

NADPH:还原型烟酰胺腺嘌呤二核苷酸磷酸
NADH:烟酰胺腺嘌呤二核苷酸
3楼2013-07-23 13:02:38
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