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At the crossroads of steroid hormone biosynthesis: the role, substrate specificity and evolutionary development of CYP17.

机译:在类固醇激素生物合成的十字路口:CYP17的作用,底物特异性和进化发展。

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摘要

Cytochrome P450s play critical roles in the metabolism of various bioactive compounds. One of the crucial functions of cytochrome P450s in Chordata is in the biosynthesis of steroid hormones. Steroid 17alpha-hydroxylase/17,20-lyase (CYP17) is localized in endoplasmic reticulum membranes of steroidogenic cells. CYP17 catalyzes the 17alpha-hydroxylation reaction of delta4-C steroids (progesterone derivatives) and delta5-C steroids (pregnenolone derivatives) as well as the 17,20-lyase reaction producing C-steroids, a key branch point in steroid hormone biosynthesis. Depending on CYP17 activity, the steroid hormone biosynthesis pathway is directed to either the formation of mineralocorticoids and glucocorticoids or sex hormones. In the present review, the current information on CYP17 is analyzed and discussed.
机译:细胞色素P450在各种生物活性化合物的代谢中起关键作用。 Chordata中细胞色素P450的关键功能之一是类固醇激素的生物合成。类固醇17α-羟化酶/ 17,20-裂合酶(CYP17)位于类固醇生成细胞的内质网膜中。 CYP17催化delta4-C类固醇(孕酮衍生物)和delta5-C类固醇(孕烯醇酮衍生物)的17alpha羟化反应,以及产生17,20-裂合酶的C类固醇的反应,C类固醇是类固醇激素生物合成的关键分支点。根据CYP17的活性,类固醇激素的生物合成途径是针对盐皮质激素和糖皮质激素或性激素的形成。在本综述中,对CYP17的当前信息进行了分析和讨论。

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