Tags: Enzyme.
In enzymology a 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+) (EC 1.1.1.239) is an enzyme that catalyzes the chemical reactiontestosterone + NAD+ androst-4-ene-317-dione + NADH + H+Thus the two substrates of this enzyme are testosterone and NAD+ whereas its 3 products are androst-4-ene-317-dione NADH and H+.This enzyme belongs to the family of oxidoreductases specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor.