产品内容
本酶催化的反应为(1) A C27 Steroid + O2 + [Reduced NADPH---Hemoprotein Reductase] = A (22S)-22-Hydroxy-C27 Steroid + 2 H2O + [Oxidized NADPH---Hemoprotein Reductase];;(2) A C28 Steroid + O2 + [Reduced NADPH---Hemoprotein Reductase] = A (22S)-22-Hydroxy-C28 Steroid + 2 H2O + [Oxidized NADPH---Hemoprotein Reductase];;(3) A C29 Steroid + O2 + [Reduced NADPH---Hemoprotein Reductase] = A (22S)-22-Hydroxy-C29 Steroid + 2 H2O + [Oxidized NADPH---Hemoprotein Reductase];;系统名称为Steroid,NADPH---Hemoprotein Reductase:oxygen 22S-Oxidoreductase (Hydroxylating)，这种植物细胞色素 P-450（血红素硫醇盐）酶参与油菜素甾醇的生物合成。虽然体内底物包括 C28 类固醇如菜油甾烷醇（campestanol）、菜油甾醇（campesterol）和 6-氧代菜油甾烷醇，但该酶能够催化多种 C27、C28 和 C29 类固醇的 C-22 羟化。
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