1S9P

crystal structure of the ligand-binding domain of the estrogen-related receptor gamma in complex with diethylstilbestrol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Basis for the Deactivation of the Estrogen-related Receptor {gamma} by Diethylstilbestrol or 4-Hydroxytamoxifen and Determinants of Selectivity.

Greschik, H.Flaig, R.Renaud, J.P.Moras, D.

(2004) J Biol Chem 279: 33639-33646

  • DOI: 10.1074/jbc.M402195200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The estrogen-related receptor (ERR) gamma behaves as a constitutive activator of transcription. Although no natural ligand is known, ERRgamma is deactivated by the estrogen receptor (ER) agonist diethylstilbestrol and the selective ER modulator 4-hyd ...

    The estrogen-related receptor (ERR) gamma behaves as a constitutive activator of transcription. Although no natural ligand is known, ERRgamma is deactivated by the estrogen receptor (ER) agonist diethylstilbestrol and the selective ER modulator 4-hydroxytamoxifen but does not significantly respond to estradiol or raloxifene. Here we report the crystal structures of the ERRgamma ligand binding domain (LBD) complexed with diethylstilbestrol or 4-hydroxytamoxifen. Antagonist binding to ERRgamma results in a rotation of the side chain of Phe-435 that partially fills the cavity of the apoLBD. The new rotamer of Phe-435 displaces the "activation helix" (helix 12) from the agonist position observed in the absence of ligand. In contrast to the complexes of the ERalpha LBD with 4-hydroxytamoxifen or raloxifene, helix 12 of antagonist-bound ERRgamma does not occupy the coactivator groove but appears to be completely dissociated from the LBD body. Comparison of the ligand-bound LBDs of ERRgamma and ERalpha reveals small but significant differences in the architecture of the ligand binding pockets that result in a slightly shifted binding position of diethylstilbestrol and a small rotation of 4-hydroxytamoxifen in the cavity of ERRgamma relative to ERalpha. Our results provide detailed molecular insight into the conformational changes occurring upon binding of synthetic antagonists to the constitutive orphan receptor ERRgamma and reveal structural differences with ERs that explain why ERRgamma does not bind estradiol or raloxifene and will help to design new selective antagonists.


    Organizational Affiliation

    Département de Biologie et Génomique Structurales, Institut de Génétique et de Biologie Moléculaire et Cellulaire, 1 rue Laurent Fries, B. P. 10142, 67404 Illkirch, France.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Estrogen-related receptor gammaA, B, C, D227Mus musculusMutation(s): 0 
Gene Names: EsrrgNr3b3ERRG2Err3Kiaa0832
Find proteins for P62509 (Mus musculus)
Explore P62509 
Go to UniProtKB:  P62509
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DES
Query on DES

Download CCD File 
A, B, C, D
DIETHYLSTILBESTROL
C18 H20 O2
RGLYKWWBQGJZGM-ISLYRVAYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
DESEC50:  630   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 71.999α = 90
b = 77.46β = 97.55
c = 95.773γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-08
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance