Term Name:	steroid 17-alpha-monooxygenase activity
Synonyms:	17alpha-hydroxylase-C17,20 lyase activity, cytochrome P-450 (P-45017alpha,lyase), cytochrome P450 CYP17, cytochrome p450 XVIIA1 activity, cytochrome P45017alpha, steroid 17-alpha-hydroxylase activity, steroid 17-alpha-hydroxylase-C17-20 lyase activity, steroid 17-alpha-hydroxylase/17,20 lyase activity, steroid 17alpha-hydroxylase activity, steroid 17alpha-monooxygenase activity, steroid 17alphahydroxylase/17,20 lyase activity, steroid,hydrogen-donor:oxygen oxidoreductase (17alpha-hydroxylating)
Definition:	Catalysis of the reaction: a C21-steroid + O2 + reduced [NADPH--hemoprotein reductase] = a 17alpha-hydroxy-C21-steroid + H+ + H2O + oxidized [NADPH--hemoprotein reductase].
Ontology:	GO: Molecular Function [GO:0004508]    QuickGO    AmiGO