pregn-4-ene-3,11,20,21-tetraone + NADH + H(+) => 11-dehydrocorticosterone + NAD(+)
pregn-4-ene-3,11,20,21-tetraone + nadh + h(+) => 11-dehydrocorticosterone + nad(+)
pregn-4-ene-3,11,20,21-tetraone + NADH + H(+) => 11-dehydrocorticosterone + NAD(+)
pregn-4-ene-3,11,20,21-tetraone + nadh + h(+) => 11-dehydrocorticosterone + nad(+)