17β-hydroxysteroid dehydrogenase
| 17β-Hydroxysteroid dehydrogenase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 1.1.1.51 | ||||||||
| CAS number | 9015-81-0 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / EGO | ||||||||
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| Search | |
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| PMC | articles |
| PubMed | articles |
| NCBI | proteins |
17β-Hydroxysteroid dehydrogenases (EC 1.1.1.51, 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. This includes interconversion of DHEA and androstenediol, androstenedione and testosterone, and estrone and estradiol, respectively.
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:
Isozyme 3 is responsible for 17-beta-hydroxysteroid dehydrogenase deficiency.
Some inhibitors of 17(-hydroxysteroid dehydrogenase type 1 were identified, for example esters of cinnamic acid and various flavones (e.g. Fisetin).
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