Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.1 Acting on the CH-OH group of donors
1.1.1 With NAD+ or NADP+ as acceptor
1.1.1.53
R04844 3alpha,20alpha,21-Trihydroxy-5beta-pregnan-11-one + NAD+ <=> 3alpha,21-Dihydroxy-5beta-pregnane-11,20-dione + NADH + H+