2Q7L

The Androgen Receptor Prostate Cancer Mutant H874Y Ligand Binding Domain Bound with Testosterone and a TIF2 box3 Coactivator Peptide 740-753


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Modulation of androgen receptor activation function 2 by testosterone and dihydrotestosterone.

Askew, E.B.Gampe, R.T.Stanley, T.B.Faggart, J.L.Wilson, E.M.

(2007) J.Biol.Chem. 282: 25801-25816

  • DOI: 10.1074/jbc.M703268200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The androgen receptor (AR) is transcriptionally activated by high affinity binding of testosterone (T) or its 5alpha-reduced metabolite, dihydrotestosterone (DHT), a more potent androgen required for male reproductive tract development. The molecular ...

    The androgen receptor (AR) is transcriptionally activated by high affinity binding of testosterone (T) or its 5alpha-reduced metabolite, dihydrotestosterone (DHT), a more potent androgen required for male reproductive tract development. The molecular basis for the weaker activity of T was investigated by determining T-bound ligand binding domain crystal structures of wild-type AR and a prostate cancer somatic mutant complexed with the AR FXXLF or coactivator LXXLL peptide. Nearly identical interactions of T and DHT in the AR ligand binding pocket correlate with similar rates of dissociation from an AR fragment containing the ligand binding domain. However, T induces weaker AR FXXLF and coactivator LXXLL motif interactions at activation function 2 (AF2). Less effective FXXLF motif binding to AF2 accounts for faster T dissociation from full-length AR. T can nevertheless acquire DHT-like activity through an AR helix-10 H874Y prostate cancer mutation. The Tyr-874 mutant side chain mediates a new hydrogen bonding scheme from exterior helix-10 to backbone protein core helix-4 residue Tyr-739 to rescue T-induced AR activity by improving AF2 binding of FXXLF and LXXLL motifs. Greater AR AF2 activity by improved core helix interactions is supported by the effects of melanoma antigen gene protein-11, an AR coregulator that binds the AR FXXLF motif and targets AF2 for activation. We conclude that T is a weaker androgen than DHT because of less favorable T-dependent AR FXXLF and coactivator LXXLL motif interactions at AF2.


    Organizational Affiliation

    Curriculum in Toxicology, Laboratories for Reproductive Biology, Lineberger Comprehensive Cancer Center, Department of Pediatrics, University of North Carolina, Chapel Hill 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Androgen receptor
A
257Homo sapiensMutation(s): 1 
Gene Names: AR (DHTR, NR3C4)
Find proteins for P10275 (Homo sapiens)
Go to Gene View: AR
Go to UniProtKB:  P10275
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Nuclear receptor coactivator 2
B
14Homo sapiensMutation(s): 0 
Gene Names: NCOA2 (BHLHE75, SRC2, TIF2)
Find proteins for Q15596 (Homo sapiens)
Go to Gene View: NCOA2
Go to UniProtKB:  Q15596
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
TES
Query on TES

Download SDF File 
Download CCD File 
A
TESTOSTERONE
C19 H28 O2
MUMGGOZAMZWBJJ-DYKIIFRCSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
TESKi: 1.4 - 29 nM (99) BINDINGDB
TESIC50: 2.7 - 3090.3 nM (99) BINDINGDB
TESEC50: 2 - 3.2 nM (99) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.92 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.182 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 54.428α = 90.00
b = 66.790β = 90.00
c = 69.940γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-06-07 
  • Released Date: 2007-07-24 
  • Deposition Author(s): Gampe, R.T.

Revision History 

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2007-10-23
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2013-05-08
    Type: Structure summary