1OV4

Crystal structure of human DHEA-ST complexed with androsterone


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Identifying androsterone (ADT) as a cognate substrate for human dehydroepiandrosterone sulfotransferase (DHEA-ST) important for steroid homeostasis: structure of the enzyme-ADT complex.

Chang, H.J.Shi, R.Rehse, P.Lin, S.X.

(2004) J.Biol.Chem. 279: 2689-2696

  • DOI: 10.1074/jbc.M310446200

  • PubMed Abstract: 
  • In steroid biosynthesis, human dehydroepiandrosterone sulfotransferase (DHEA-ST) in the adrenals has been reported to catalyze the transfer of the sulfonate group from 3'-phosphoadenosine-5'-phosphosulfate to dehydroepiandrosterone (DHEA). DHEA and i ...

    In steroid biosynthesis, human dehydroepiandrosterone sulfotransferase (DHEA-ST) in the adrenals has been reported to catalyze the transfer of the sulfonate group from 3'-phosphoadenosine-5'-phosphosulfate to dehydroepiandrosterone (DHEA). DHEA and its sulfate play roles as steroid precursors; however, the role of the enzyme in the catabolism of androgens is poorly understood. Androsterone sulfate is clinically recognized as one of the major androgen metabolites found in urine. Here it is demonstrated that this enzyme recognizes androsterone (ADT) as a cognate substrate with similar kinetics but a 2-fold specificity and stronger substrate inhibition than DHEA. The structure of human DHEA-ST in complex with ADT has been solved at 2.7 A resolution, confirming ADT recognition. Structural analysis has revealed the binding mode of ADT differs from that of DHEA, despite the similarity of the overall structure between the ADT and the DHEA binary complexes. Our results identify that this human enzyme is an ADT sulfotransferase as well as a DHEA sulfotransferase, implying an important role in steroid homeostasis for the adrenals and liver.


    Organizational Affiliation

    Canadian Institutes of Health Research Group in Oncology and Molecular Endocrinology Laboratory, CHUL Research Center and Laval University, Sainte-Foy, Quebec G1V 4G2, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Alcohol sulfotransferase
A
293Homo sapiensGene Names: SULT2A1 (HST, STD)
EC: 2.8.2.14
Find proteins for Q06520 (Homo sapiens)
Go to Gene View: SULT2A1
Go to UniProtKB:  Q06520
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
AOX
Query on AOX

Download SDF File 
Download CCD File 
A
(3Beta,5alpha)-3-Hydroxyandrostan-17-one
Epiandrosterone
C19 H30 O2
QGXBDMJGAMFCBF-LUJOEAJASA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 75.293α = 90.00
b = 129.818β = 90.00
c = 44.287γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSphasing
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-02-17
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2013-07-03
    Type: Non-polymer description