Reaction catalyzed by 3alpha-hydroxysteroid 3-dehydrogenase (1.1.1.357)
+
NAD(P)+
=
+
NAD(P)H
+
7alpha,12alpha-dihydroxy-5beta-cholestan-3-one
+
NAD(P)+
=
3alpha,7alpha,12alpha-trihydroxy-5beta-cholestane
+
NAD(P)H
+
H+
