Reaction catalyzed by 3(or 17)beta-hydroxysteroid dehydrogenase (1.1.1.51), indanol dehydrogenase (1.1.1.112), 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+) (1.1.1.239)
+
NAD+
=
+
NADH
+
5alpha-androstan-3alpha-ol-17-one
+
NAD+
=
5alpha-androstan-3,17-dione
+
NADH
+
H+
