1ihi

X-ray diffraction
3Å resolution

Crystal Structure of Human Type III 3-alpha-Hydroxysteroid Dehydrogenase/Bile Acid Binding Protein (AKR1C2) Complexed with NADP+ and Ursodeoxycholate

Released:

Function and Biology Details

Reactions catalysed:
Indan-1-ol + NAD(P)(+) = indanone + NAD(P)H
Androsterone + NAD(P)(+) = 5-alpha-androstane-3,17-dione + NAD(P)H
A 3-alpha-hydroxysteroid + NAD(P)(+) = a 3-oxosteroid + NAD(P)H
Androstan-3-alpha,17-beta-diol + NAD(+) = 17-beta-hydroxyandrostan-3-one + NADH
17-beta-estradiol + NAD(P)(+) = estrone + NAD(P)H
Trans-1,2-dihydrobenzene-1,2-diol + NADP(+) = catechol + NADPH
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-156658 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Aldo-keto reductase family 1 member C2 Chains: A, B
Molecule details ›
Chains: A, B
Length: 323 amino acids
Theoretical weight: 36.79 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P52895 (Residues: 1-323; Coverage: 100%)
Gene names: AKR1C2, DDH2
Sequence domains: Aldo/keto reductase family
Structure domains: NADP-dependent oxidoreductase domain

Ligands and Environments


Cofactor: Ligand NAP 2 x NAP
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SIEMENS
Spacegroup: R32
Unit cell:
a: 144.09Å b: 144.09Å c: 202.77Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.234 0.223 0.278
Expression system: Escherichia coli