Testosterone (HSD17B3) Antibody – Mouse Monoclonal

This isoform of 17 beta-hydroxysteroid dehydrogenase is expressed predominantly in the testis and catalyzes the conversion of androstenedione to testosterone. It preferentially uses NADP as cofactor. Deficiency can result in male pseudohermaphroditism with gynecomastia. [provided by RefSeq, Jul 2008]

HSD17B3: Favors the reduction of androstenedione to testosterone. Uses NADPH while the two other EDH17B enzymes use NADH. Defects in HSD17B3 are the cause of male pseudohermaphrodism with gynecomastia (MPH). These individuals have unambiguous female external genitalia at birth, but fail to menstruate at the time of expected puberty and instead virilize as evidenced by growth of the phallus. Breast development may or may not take place. Belongs to the short-chain dehydrogenases/reductases (SDR) family. 17-beta-HSD 3 subfamily.

Protein type: Lipid Metabolism - androgen and estrogen; EC 1.1.1.64; Oxidoreductase

Chromosomal Location of Human Ortholog: 9q22

Cellular Component: endoplasmic reticulum membrane; intracellular membrane-bound organelle

Molecular Function: testosterone 17-beta-dehydrogenase (NADP+) activity

Biological Process: steroid metabolic process; male genitalia development; androgen biosynthetic process

Disease: 17-beta Hydroxysteroid Dehydrogenase Iii Deficiency