CYP17A1
细胞色素 P450 17A1(英語:)也被称为甾体17α-单加氧酶(),17α-羟基化酶(),17,20-碳链裂解酶( 或 )是一种羟基化酶,由位于人类10号染色体的 CYP17A1 基因编码[6]。这一基因在许多组织与细胞中都有表达,特别是肾上腺皮质的网状带和肾上腺束状带以及生殖腺组织[7][8]。CYP17A1蛋白属于细胞色素P450氧化酶超家族的一员,定位于内质网,既有甾体的17α-羟化酶也有17,20-裂解酶活性,在类固醇生成途径中将孕烯醇酮或孕酮的D环上17号C原子上α位加上一个羟基(-OH)基团,生成17α-羟孕烯醇酮或17α-羟孕酮(17α-羟基化活性);之后再断裂在17号C原子20号C原子之间的碳碳键,生成脱氢表雄酮(DHEA)或雄烯二酮(17,20-裂合酶活性)[8]。
结构
参考文献
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外部链接
- MeSH(醫學主題詞)上面的CYP17A1+protein,+human(美式英语)
- Human CYP17A1 genome location and CYP17A1 gene details page in the UCSC Genome Browser.
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