1.14.14.143 cytochrome P-450 - 1.14.14.143 cytochrome P450 a cytochrome P450 monooxygenase 1.14.14.143 FAD - 1.14.14.143 FMN - 1.14.14.143 NADPH-hemoprotein reductase A flavoprotein containing both FMN and FAD. This enzyme catalyses the transfer of electrons from NADPH, an obligatory two-electron donor, to microsomal P-450 monooxygenases, EC 1.14.14._