ID 1.1.1.63 DE Testosterone 17-beta-dehydrogenase. AN 17-beta-HSD. AN 17-ketoreductase. CA Testosterone + NAD(+) = androst-4-ene-3,17-dione + NADH. DR P42330, AK1C3_HUMAN; Q5R7C9, AK1C3_PONAB; P37059, DHB2_HUMAN ; DR P51658, DHB2_MOUSE ; Q62730, DHB2_RAT ; Q9GME3, DHB8_CALJA ; DR Q5TJF5, DHB8_CANFA ; Q92506, DHB8_HUMAN ; P50171, DHB8_MOUSE ; DR Q9XT00, DHB8_PIG ; Q6MGB5, DHB8_RAT ; Q3T001, H17B6_BOVIN; DR O14756, H17B6_HUMAN; Q9R092, H17B6_MOUSE; O54753, H17B6_RAT ; //