产品内容
本酶催化的反应为(24S)-Cholest-5-Ene-3beta,24-Diol + [Reduced NADPH---Hemoprotein Reductase] + O2 = (24S)-Cholest-5-Ene-3beta,7alpha,24-Triol + [Oxidized NADPH---Hemoprotein Reductase] + H2O,系统名称为(24S)-Cholest-5-Ene-3beta,24-Diol,NADPH---Hemoprotein Reductase:oxygen Oxidoreductase (7alpha-Hydroxylating),一种P-450血红素-硫醇盐蛋白,存在于肝微粒体和睫状体无色素上皮中 [2]。该酶对(24S)-胆甾-5-烯-3β,24-二醇专一,该底物主要由脑内的 EC 1.14.14.25,胆固醇24-羟化酶形成。该酶的直接电子供体是 EC 1.6.2.4,NADPH---血红蛋白还原酶。