Cytochrome P450 Family 26. CYP26 Cytochrome P450 . CYP26 Enzymes . CYP26 Family . Cytochrome P-450 CYP26 . Cytochrome P 450 CYP26 . Cytochrome P450, CYP26 . A cytochrome P450 enzyme family whose members function in the metabolism of RETINOIC ACID. It includes RETINOIC ACID 4-HYDROXYLASE. . 1.00