1XF0

Crystal structure of human 17beta-hydroxysteroid dehydrogenase type 5 (AKR1C3) complexed with delta4-androstene-3,17-dione and NADP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of the multispecific 17beta-hydroxysteroid dehydrogenase type 5: critical androgen regulation in human peripheral tissues

Qiu, W.Zhou, M.Labrie, F.Lin, S.-X.

(2004) Mol.Endocrinol. 18: 1798-1807

  • DOI: 10.1210/me.2004-0032

  • PubMed Abstract: 
  • Human type 5 17beta-hydroxysteroid dehydrogenase (17beta-HSD5;AKR1C3) plays a major role in the metabolism of androgens in peripheral tissues. In prostate basal cells, this enzyme is involved in the transformation of dehydroepiandrosterone into dihyd ...

    Human type 5 17beta-hydroxysteroid dehydrogenase (17beta-HSD5;AKR1C3) plays a major role in the metabolism of androgens in peripheral tissues. In prostate basal cells, this enzyme is involved in the transformation of dehydroepiandrosterone into dihydrotestosterone, the most potent androgen. It is thus a potential target for prostate cancer therapy because it is understood that the testosterone formation by this enzyme is an important factor, particularly in patients who have undergone surgical or medical castration. Here we report the first structure of a human type 5 17beta-HSD in two ternary complexes, in which we found that the androstenedione molecule has a different binding position from that of testosterone. The two testosterone-binding orientations in the substrate-binding site demonstrate the structural basis of the alternative binding and multispecificity of the enzyme. Phe306 and Trp227 are the key residues involved in ligand recognition as well as product release. A safety belt in the cofactor-binding site enhances nicotinamide adenine dinucleotide phosphate binding and accounts for its high affinity as demonstrated by kinetic studies. These structures have provided a dynamic view of the enzyme reaction converting androstenedione to testosterone as well as valuable information for the development of potent enzyme inhibitors.


    Related Citations: 
    • Purification, crystallization and preliminary x-ray diffraction results of human 17beta-hydroxysteroid dehydrogenase type 5.
      Zhou, M.,Qiu, W.,Chang, H.-J.,Gangloff, A.,Lin, S.-X.
      (2002) Acta Crystallogr.,Sect.D 58: 1048


    Organizational Affiliation

    Oncology and Molecular Endocrinology Research Center, Centre Hospitalier de l'Université Laval Medical Center (CHUL) and Laval University, Sainte-Foy, Quebec, Canada G1V 4G2.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aldo-keto reductase family 1 member C3
A
323Homo sapiensMutation(s): 0 
Gene Names: AKR1C3 (DDH1, HSD17B5, KIAA0119, PGFS)
EC: 1.-.-.-
Find proteins for P42330 (Homo sapiens)
Go to Gene View: AKR1C3
Go to UniProtKB:  P42330
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
NAP
Query on NAP

Download SDF File 
Download CCD File 
A
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE
C21 H28 N7 O17 P3
XJLXINKUBYWONI-NNYOXOHSSA-N
 Ligand Interaction
ASD
Query on ASD

Download SDF File 
Download CCD File 
A
4-ANDROSTENE-3-17-DIONE
C19 H26 O2
AEMFNILZOJDQLW-QAGGRKNESA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.170 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 110.579α = 90.00
b = 110.579β = 90.00
c = 56.886γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
MOLREPphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-10-26
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance