catalytic activity:A 3-oxo-5-alpha-steroid + acceptor = a 3-oxo-Delta(4)-steroid + reduced acceptor.,function:Converts testosterone into 5-alpha-dihydrotestosterone and progesterone or corticosterone into their corresponding 5-alpha-3-oxosteroids. It plays a central role in sexual differentiation and androgen physiology.,induction:Its expression is regulated by androgens such as testosterone.,online information:5-alpha reductase entry,similarity:Belongs to the steroid 5-alpha reductase family.,tissue specificity:Liver and prostate (at a low level).,
Microsome membrane; Multi-pass membrane protein. Endoplasmic reticulum membrane ; Multi-pass membrane protein .
Liver and prostate (at a low level).