Reaction catalyzed by 3(or 17)beta-hydroxysteroid dehydrogenase (1.1.1.51), 3alpha(or 20beta)-hydroxysteroid dehydrogenase (1.1.1.53)
+
NADP+
=
+
NADPH
+
5alpha-dihydrotestosterone
+
NADP+
=
5alpha-androstane-3,17-dione
+
NADPH
+
H+
