GO:0047787

delta4-3-oxosteroid 5beta-reductase activity

Details: 
Catalysis of the reactions: (1) 5beta-cholestan-3-one + NADP+ = cholest-4-en-3-one + NADPH + H+ and (2) 17,21-dihydroxy-5beta-pregnane-3,11,20-trione + NADP+ = cortisone + NADPH + H+. [EC:1.3.1.3, MetaCyc:CORTISONE-BETA-REDUCTASE-RXN]
Evidence Code: