3β-Hydroxysteroid dehydrogenase
CLASS OF ENZYMES
3Beta Hydroxysteroid dehydrogenase; 3β-HSD; 3b-hydroxy-D5-steroid dehydrogenase; Progesterone reductase; 3-beta-hydroxysteroid dehydrogenase; 3beta-hydroxy-Delta5-steroid dehydrogenase; 3b-HSD; Delta 4-5 isomerase; 3 beta-hydroxysteroid dehydrogenase; 3β-hydroxysteroid dehydrogenase; 3βHSD II; 3-beta HSD; 3-β-hydroxysteroid dehydrogenase; 3-β-Hydroxysteroid dehydrogenase; 3-beta-HSD; 3beta-hydroxysteroid dehydrogenase; EC 1.1.1.145; 3beta-hydroxy-Delta5-steroid:NAD+ 3-oxidoreductase; 3β-hydroxysteroid dehydrogenase/Δ-5-4 isomerase; Delta 5-4 isomerase; 3beta-Hydroxysteroid dehydrogenase; 3β-Hydroxysteroid dehydrogenases; 3β-hydroxy-Δ5-C27-steroid oxidoreductase; 3β-Hydroxysteroid dehydrogenase inhibitor; 3β-Hydroxysteroid dehydrogenase inhibitors; 3β-hydroxysteroid dehydrogenase inhibitors; 3β-hydroxysteroid dehydrogenase inhibitor; 3β-HSD inhibitor; 3β-HSD inhibitors; 3B-HSD inhibitors; 3B-HSD inhibitor; 3B-hydroxysteroid dehydrogenase inhibitor; 3B-hydroxysteroid dehydrogenase inhibitors; 3B-Hydroxysteroid dehydrogenase inhibitors; 3B-Hydroxysteroid dehydrogenase inhibitor; 3beta-Hydroxysteroid dehydrogenase inhibitor; 3beta-Hydroxysteroid dehydrogenase inhibitors; 3beta-hydroxysteroid dehydrogenase inhibitors; 3beta-hydroxysteroid dehydrogenase inhibitor; 3beta-HSD inhibitor; 3beta-HSD inhibitors; 3-beta-HSD inhibitors; 3-beta-HSD inhibitor; 3-beta-hydroxysteroid dehydrogenase inhibitor; 3-beta-hydroxysteroid dehydrogenase inhibitors; 3-beta-Hydroxysteroid dehydrogenase inhibitors; 3-beta-Hydroxysteroid dehydrogenase inhibitor
3β-Hydroxysteroid dehydrogenase/Δ5-4 isomerase (3β-HSD) () is an enzyme that catalyzes the biosynthesis of the steroid progesterone from pregnenolone, 17α-hydroxyprogesterone from 17α-hydroxypregnenolone, and androstenedione from dehydroepiandrosterone (DHEA) in the adrenal gland. It is the only enzyme in the adrenal pathway of corticosteroid synthesis that is not a member of the cytochrome P450 family.