X-ray diffraction
2Å resolution

Crystal structure of 5beta-reductase (AKR1D1) in complex with NADP+ and 4-androstenedione


Function and Biology Details

Reaction catalysed:
17,21-dihydroxy-5-beta-pregnane-3,11,20-trione + NADP(+) = cortisone + NADPH
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Aldo-keto reductase family 1 member D1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 326 amino acids
Theoretical weight: 37.43 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P51857 (Residues: 1-326; Coverage: 100%)
Gene names: AKR1D1, SRD5B1
Sequence domains: Aldo/keto reductase family
Structure domains: NADP-dependent oxidoreductase domain

Ligands and Environments

Cofactor: Ligand NAP 2 x NAP
3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU RU200
Spacegroup: P212121
Unit cell:
a: 50.41Å b: 110.87Å c: 130.28Å
α: 90° β: 90° γ: 90°
R R work R free
0.208 0.208 0.238
Expression system: Escherichia coli