Reaction catalyzed by 11beta-hydroxysteroid dehydrogenase (NAD+) (1.1.1.B40), 11beta-hydroxysteroid dehydrogenase (1.1.1.146)
2
+
2
NADPH
+
2
=
+
+
2
NADP+
2 7-oxocholesterol
+
2 NADPH
+
2 H+
=
7beta-hydroxycholesterol
+
7alpha-hydroxycholesterol
+
2 NADP+
