Reaction catalyzed by 3(or 17)beta-hydroxysteroid dehydrogenase (1.1.1.51)
+
NAD(P)+
=
+
NAD(P)H
+
5beta-pregnan-3beta-ol-20-one
+
NAD(P)+
=
5-pregnan-3,20-dione
+
NAD(P)H
+
H+
