1VJB

crystal structure of the ligand-binding domain of the estrogen-related receptor gamma in complex with 4-hydroxytamoxifen


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.256 

wwPDB Validation 3D Report Full Report


This is version 1.3 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
  • Primary Citation of Related Structures:  

  • 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 gamma
A, B
251Homo sapiensMutation(s): 0 
Gene Names: ESRRG (ERR3, ERRG2, KIAA0832, NR3B3)
Find proteins for P62508 (Homo sapiens)
Go to Gene View: ESRRG
Go to UniProtKB:  P62508
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OHT
Query on OHT

Download SDF File 
Download CCD File 
A, B
4-HYDROXYTAMOXIFEN
C26 H29 N O2
TXUZVZSFRXZGTL-QPLCGJKRSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OHTIC50: 10.3 - 1350 nM (100) BINDINGDB
OHTEC50: 15 nM (100) BINDINGDB
OHTIC50: 13 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.256 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 74.624α = 90.00
b = 74.624β = 90.00
c = 144.778γ = 120.00
Software Package:
Software NamePurpose
AMoREphasing
HKL-2000data reduction
SCALEPACKdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-08
    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: 2018-06-13
    Type: Data collection, Database references, Source and taxonomy, Structure summary