Function and Biology

Crystal structure of human 17beta-hydroxysteroid dehydrogenase type 5 in complex with 3-((3,4-dihydroisoquinolin-2(1H)-yl)sulfonyl)benzoic acid (17)

EC 1.1.1.64: Testosterone 17-beta-dehydrogenase (NADP(+))

Reaction catalysed:
Testosterone + NADP(+) = androst-4-ene-3,17-dione + NADPH
Systematic name:
17-beta-hydroxysteroid:NADP(+) 17-oxidoreductase
Alternative Name(s):
  • 17-ketoreductase
  • NADP-dependent testosterone-17-beta-oxidoreductase

EC 1.1.1.62: 17-beta-estradiol 17-dehydrogenase

Reaction catalysed:
17-beta-estradiol + NAD(P)(+) = estrone + NAD(P)H
Systematic name:
17-beta-estradiol:NAD(P)(+) 17-oxidoreductase
Alternative Name(s):
  • 17-beta,20-alpha-hydroxysteroid dehydrogenase
  • 17-beta-HSD
  • 17-beta-estradiol dehydrogenase
  • 17-beta-hydroxysteroid dehydrogenase
  • 20-alpha-hydroxysteroid dehydrogenase
  • Estradiol dehydrogenase
  • Estrogen 17-oxidoreductase
  • HSD17B7

EC 1.1.1.53: 3-alpha(or 20-beta)-hydroxysteroid dehydrogenase

Reaction catalysed:
Androstan-3-alpha,17-beta-diol + NAD(+) = 17-beta-hydroxyandrostan-3-one + NADH
Systematic name:
3-alpha(or 20-beta)-hydroxysteroid:NAD(+) oxidoreductase
Alternative Name(s):
  • (R)-20-hydroxysteroid dehydrogenase
  • 20-beta-HSD
  • 20-beta-hydroxysteroid dehydrogenase
  • 3-alpha,20-beta-hydroxysteroid:NAD(+)-oxidoreductase
  • Cortisone reductase
  • Dehydrogenase, 20-beta-hydroxy steroid
  • Delta(4)-3-ketosteroid hydrogenase
  • NADH-20-beta-hydroxysteroid dehydrogenase

EC 1.1.1.357: 3-alpha-hydroxysteroid 3-dehydrogenase

Reaction catalysed:
A 3-alpha-hydroxysteroid + NAD(P)(+) = a 3-oxosteroid + NAD(P)H
Systematic name:
3-alpha-hydroxysteroid:NAD(P)(+) 3-oxidoreductase
Alternative Name(s):
  • 3-alpha-hydroxysteroid dehydrogenase
  • AKR1C2 (gene name)
  • AKR1C4 (gene name)
  • HsdA (gene name)

EC 1.1.1.239: 3-alpha-(17-beta)-hydroxysteroid dehydrogenase (NAD(+))

Reaction catalysed:
Testosterone + NAD(+) = androstenedione + NADH
Systematic name:
3-alpha(or 17-beta)-hydroxysteroid:NAD(+) oxidoreductase
Alternative Name(s):
  • 17-beta-HSD
  • 17-ketoreductase
  • 3-alpha(17-beta)-HSD
  • 3-alpha,17-beta-hydroxy steroid dehydrogenase
  • HSD17B6 (gene name)
  • HSD17B8 (gene name)

EC 1.1.1.210: 3-beta-(or 20-alpha)-hydroxysteroid dehydrogenase

Reaction catalysed:
5-alpha-androstan-3-beta,17-beta-diol + NADP(+) = 17-beta-hydroxy-5-alpha-androstan-3-one + NADPH
Systematic name:
3-beta(or 20-alpha)-hydroxysteroid:NADP(+) oxidoreductase
Alternative Name(s):
  • 3-beta,20-alpha-hydroxysteroid oxidoreductase
  • 3-beta-HSD
  • Dehydrogenase, 3-beta,20-alpha-hydroxy steroid
  • Progesterone reductase

EC 1.1.1.188: Prostaglandin-F synthase

Reaction catalysed:
(5Z,13E)-(15S)-9-alpha,11-alpha,15-trihydroxyprosta-5,13-dienoate + NADP(+) = (5Z,13E)-(15S)-9-alpha,15-dihydroxy-11-oxoprosta-5,13-dienoate + NADPH
Systematic name:
(5Z,13E)-(15S)-9-alpha,11-alpha,15-trihydroxyprosta-5,13-dienoate:NADP(+) 11-oxidoreductase
Alternative Name(s):
  • NADPH-dependent prostaglandin D(2) 11-keto reductase
  • PGD(2) 11-ketoreductase
  • PGF synthetase
  • PGF(2)-alpha synthetase
  • Prostaglandin 11-keto reductase
  • Prostaglandin 11-ketoreductase
  • Prostaglandin D(2)-ketoreductase
  • Prostaglandin F synthase
  • Prostaglandin F synthetase
  • Prostaglandin-D(2) 11-ketoreductase
  • Prostaglandin-D(2) 11-reductase
  • Prostaglandin-D(2) ketoreductase
  • Prostaglandin-F synthetase
  • Reductase, 15-hydroxy-11-oxoprostaglandin
  • Synthetase, prostaglandin F(2)-alpha

GO terms

Biochemical function:
Biological process:
Cellular component:

Sequence family

Pfam Protein family (Pfam)
PF00248
Domain description: Aldo/keto reductase family
Occurring in:
  1. Aldo-keto reductase family 1 member C3
The deposited structure of PDB entry 4fam contains 2 copies of Pfam domain PF00248 (Aldo/keto reductase family) in Aldo-keto reductase family 1 member C3. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR020471
Domain description: Aldo-keto reductase
Occurring in:
  1. Aldo-keto reductase family 1 member C3
IPR018170
Domain description: Aldo/keto reductase, conserved site
Occurring in:
  1. Aldo-keto reductase family 1 member C3
IPR036812
Domain description: NADP-dependent oxidoreductase domain superfamily
Occurring in:
  1. Aldo-keto reductase family 1 member C3
IPR023210
Domain description: NADP-dependent oxidoreductase domain
Occurring in:
  1. Aldo-keto reductase family 1 member C3
IPR044482
Domain description: Aldo-keto reductase family 1 member C
Occurring in:
  1. Aldo-keto reductase family 1 member C3

Structure domain

CATH CATH domain
3.20.20.100
Class: Alpha Beta
Architecture: Alpha-Beta Barrel
Topology: TIM Barrel
Homology: NADP-dependent oxidoreductase domain
Occurring in:
  1. Aldo-keto reductase family 1 member C3
The deposited structure of PDB entry 4fam contains 2 copies of CATH domain 3.20.20.100 (TIM Barrel) in Aldo-keto reductase family 1 member C3. Showing 1 copy in chain A.