Reaction catalyzed by 3beta-hydroxycholanate 3-dehydrogenase (NAD+) (1.1.1.391)
+
NADH
+
=
+
NAD+
12alpha-hydroxy-3-oxo-5-beta-cholan-24-oic acid
+
NADH
+
H+
=
3beta,12alpha-dihydroxy-5-beta-cholan-24-oic acid
+
NAD+
