Hydroxysteroid dehydrogenase
![](../I/m/Trimethyl_steroid-nomenclature.png)
Steroid numbering.
The hydroxysteroid dehydrogenases are a group of alcohol oxidoreductases that catalyze the dehydrogenation of hydroxysteroids.
There are four types, classified by the number of the carbon acted upon:
Carbon | From | To |
3 | pregnenolone | progesterone |
3 | 17-Hydroxypregnenolone | 17-Hydroxyprogesterone |
3 | dehydroepiandrosterone | androstenedione |
11 | cortisol | cortisone |
17 | androstenedione | testosterone |
20 | progesterone | 20-alpha-dihydroprogesterone |
See also
Additional images
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Steroidogenesis
External links
- Hydroxysteroid Dehydrogenases at the US National Library of Medicine Medical Subject Headings (MeSH)
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