3alpha-hydroxysteroid dehydrogenase (A-specific)

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3-alpha-hydroxysteroid dehydrogenase (A-specific)
Identifiers
EC no. 1.1.1.213
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 / QuickGO
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NCBI proteins

In enzymology, a 3alpha-hydroxysteroid dehydrogenase (A-specific) (EC 1.1.1.213) is an enzyme that catalyzes the chemical reaction

androsterone + NAD(P)+ 5alpha-androstane-3,17-dione + NAD(P)H + H+

The 3 substrates of this enzyme are androsterone, NAD+, and NADP+, whereas its 4 products are 5alpha-androstane-3,17-dione, NADH, NADPH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor, more specifically it is part of the group of hydroxysteroid dehydrogenases. The systematic name of this enzyme class is 3alpha-hydroxysteroid:NAD(P)+ oxidoreductase (A-specific).

Structural studies

As of late 2007, 11 structures have been solved for this class of enzymes, with PDB accession codes 1J96, 1LWI, 1S1P, 1S1R, 1S2A, 1S2C, 1XJB, 2F38, 2FGB, 2HDJ, and 2IPJ.

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<span class="mw-page-title-main">3alpha(or 20beta)-hydroxysteroid dehydrogenase</span> Class of enzymes

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References