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 2IPG
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Mouse 17alpha-Hydroxysteroid Dehydrogenase (AKR1C21) Binds Steroids Differently from other Aldo-keto Reductases: Identification and Characterization of Amino Acid Residues Critical for Substrate Binding.
Faucher, F., Cantin, L., Pereira de Jesus-Tran, K., Lemieux, M., Luu-The, V., Labrie, F., Breton, R.
J.Mol.Biol.