CATH Classification

Domain Context

CATH Clusters

Superfamily NADP-dependent oxidoreductase domain
Functional Family Aldo-keto reductase family 1 member C3

Enzyme Information

1.1.1.-
With NAD(+) or NADP(+) as acceptor.
based on mapping to UniProt Q91WR5
1.1.1.209
3(or 17)-alpha-hydroxysteroid dehydrogenase.
based on mapping to UniProt Q91WR5
Androsterone + NAD(P)(+) = 5-alpha-androstane-3,17-dione + NAD(P)H.
-!- Acts on the 3-alpha-hydroxy group of androgens of the 5-alpha- androstane series; and also, more slowly, on the 17-alpha-hydroxyl group of both androgenic and estrogenic substrates (cf. EC 1.1.1.51).

UniProtKB Entries (1)

Q91WR5
AK1CL_MOUSE
Mus musculus
Aldo-keto reductase family 1 member C21

PDB Structure

PDB 2P5N
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structure of 3(17)alpha-hydroxysteroid dehydrogenase (AKR1C21) holoenzyme from an orthorhombic crystal form: an insight into the bifunctionality of the enzyme.
Dhagat, U., Carbone, V., Chung, R.P., Schulze-Briese, C., Endo, S., Hara, A., El-Kabbani, O.
Acta Crystallogr.,Sect.F
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