Open Access Articles- Top Results for 17Beta Hydroxysteroid dehydrogenase

17Beta Hydroxysteroid dehydrogenase

17β-Hydroxysteroid dehydrogenase
EC number
CAS number 9015-81-0
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO
Steroidogenesis. 17β-HSD visible at left.

17β-Hydroxysteroid dehydrogenases (EC, beta-hydroxy steroid dehydrogenase, 17-ketoreductase, 17beta-hydroxy steroid dehydrogenase, 3beta-hydroxysteroid dehydrogenase, 3beta-hydroxy steroid dehydrogenase, 17β-HSD, 17-ketosteroid oxidoreductases, HSD17B, 17-ketosteroid reductases, 17-KSR), are a group of alcohol oxidoreductases which catalyse the dehydrogenation of 17-hydroxysteroids in steroidogenesis.[1][2][3][4][5] This includes interconversion of DHEA and androstenediol, androstenedione and testosterone, and estrone and estradiol, respectively.[6][7]

Note that the major reactions catalysed by 17β-HSD (e.g., the conversion of androstenedione to testosterone) are in fact hydrogenation (reduction) rather than dehydrogenation (oxidation) reactions.


Genes coding for 17β-HSD include:

Clinical significance

Isozyme 3 is responsible for 17-beta-hydroxysteroid dehydrogenase deficiency.


  1. ^ Dahm, K. and Breuer, H. (1964). "Anreicherung einer 17β-hydroxysteroid:NAD(P)-oxydoreduktase aus der Nebenniere der Ratte". Hoppe-Seyler's Z. Physiol. Chem. 336: 63–68. PMID 14214322. doi:10.1515/bchm2.1964.336.1.63. 
  2. ^ Lynn, W. S. and Brown, R. H. (1958). "The conversion of progesterone to androgens by testes". J. Biol. Chem. 232 (2): 1015–1030. PMID 13549484. 
  3. ^ Marcus, P. I. and Talalay, P. (1956). "Induction and purification of α- and β-hydroxysteroid dehydrogenases". J. Biol. Chem. 218 (2): 661–674. PMID 13295221. 
  4. ^ Schultz, R. M., Groman, F. V. and Engel, L. L. (1977). "3(17)β-Hydroxysteroid dehydrogenase of Pseudomonas testosteroni. A convenient purification and demonstration of multiple molecular forms". J. Biol. Chem. 252: 3775–3783. PMID 193845. 
  5. ^ Talalay, P. and Dobson, M. M. (1953). "Purification and properties of a α-hydroxysteroid dehydrogenase". J. Biol. Chem. 205: 823–837. PMID 13129261. 
  6. ^ Labrie, F.; Luu-The, V.; Lin. S. X. et al. (January 1997). "The key role of 17 beta-hydroxysteroid dehydrogenases in sex steroid biology". Steroids 62 (1): 148–58. PMID 9029730. doi:10.1016/S0039-128X(96)00174-2. 
  7. ^ Charles G. D. Brook; Daniel Truong, M.D.; Peter Clayton; William Carroll; Rosalind Brown (22 September 2011). Brook's Clinical Pediatric Endocrinology. John Wiley & Sons. p. 288. ISBN 978-1-4443-1673-5. Retrieved 29 April 2012. 

External links

  1. REDIRECT Template:Cholesterol and steroid metabolism enzymes