Reaction catalyzed by 21-hydroxysteroid dehydrogenase (NADP+) (1.1.1.151) No sequence available
+
NADPH
=
+
NADP+
17alpha-hydroxy-pregn-4-ene-3,11,20,21-tetraone
+
NADPH
=
17alpha,21-dihydroxy-pregn-4-ene-3,11,20-trione
+
NADP+