Reaction catalyzed by steroid 17alpha-monooxygenase (1.14.14.19)
2
+
2
AH2
+
2
=
+
+
2
A
+
2
H2O
2 progesterone
+
2 AH2
+
2 O2
=
17alpha-hydroxyprogesterone
+
16alpha-hydroxyprogesterone
+
2 A
+
2 H2O