3beta(or 20alpha)-hydroxysteroid dehydrogenase

In enzymology, a 3-β(or 20-α)-hydroxysteroid dehydrogenase is an enzyme that catalyzes the chemical reaction This enzyme possesses the combined activities of the 3-β-hydroxysteroid dehydrogenase/Δ-5-4 isomerase and 20-α-hydroxysteroid dehydrogenase enzymes. ^[1]

5 relations: Catalysis, Chemical reaction, Enzyme, 20alpha-hydroxysteroid dehydrogenase, 3β-Hydroxysteroid dehydrogenase.

Catalysis

Catalysis is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalysthttp://goldbook.iupac.org/C00876.html, which is not consumed in the catalyzed reaction and can continue to act repeatedly.

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Chemical reaction

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

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Enzyme

Enzymes are macromolecular biological catalysts.

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20alpha-hydroxysteroid dehydrogenase

In enzymology, a 20-α-hydroxysteroid dehydrogenase is an enzyme that catalyzes the chemical reaction The 3 substrates of this enzyme are 17alpha,20alpha-dihydroxypregn-4-en-3-one, NAD+, and NADP+, whereas its 4 products are 17-alpha-hydroxyprogesterone, NADH, NADPH, and H+.

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3β-Hydroxysteroid dehydrogenase

3β-Hydroxysteroid dehydrogenase/Δ5-4 isomerase (3β-HSD) is an enzyme that catalyzes the biosynthesis of progesterone from pregnenolone, 17α-hydroxyprogesterone from 17α-hydroxypregnenolone, and androstenedione from dehydroepiandrosterone (DHEA) in the adrenal gland.

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Redirects here:

3b(or 20a)-hydroxysteroid dehydrogenase, 3beta(or 20alpha)-hydroxysteroid:NADP+ oxidoreductase, EC 1.1.1.210.

References

[1] https://en.wikipedia.org/wiki/3beta(or_20alpha)-hydroxysteroid_dehydrogenase

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