2JF9

ESTROGEN RECEPTOR ALPHA LBD IN COMPLEX WITH A TAMOXIFEN-SPECIFIC PEPTIDE ANTAGONIST


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Insights Into Corepressor Recognition by Antagonist-Bound Estrogen Receptors.

Heldring, N.Pawson, T.Mcdonnell, D.Treuter, E.Gustafsson, J.A.Pike, A.C.W.

(2007) J Biol Chem 282: 10449

  • DOI: 10.1074/jbc.M611424200
  • Primary Citation of Related Structures:  
    2JFA, 2JF9

  • PubMed Abstract: 
  • Direct recruitment of transcriptional corepressors to estrogen receptors (ER) is thought to contribute to the tissue-specific effects of clinically important ER antagonists. Here, we present the crystal structures of two affinity-selected peptides in complex with antagonist-bound ERalpha ligand-binding domain ...

    Direct recruitment of transcriptional corepressors to estrogen receptors (ER) is thought to contribute to the tissue-specific effects of clinically important ER antagonists. Here, we present the crystal structures of two affinity-selected peptides in complex with antagonist-bound ERalpha ligand-binding domain. Both peptides adopt helical conformations, bind along the activation function 2 coregulator interaction surface, and mimic corepressor (CoRNR) sequence motif binding. Peptide binding is weak in a wild-type context but significantly enhanced by removal of ER helix 12. This region contains a previously unrecognized CoRNR motif that is able to compete with corepressors for binding to activation function 2, thereby providing a structural explanation for the poor ability of ER to directly interact with classical corepressors. Furthermore, the ability of other sequence motifs to mimic corepressor binding raises the possibility that coregulators do not necessarily require CoRNR motifs for direct recruitment to antagonist-bound ER.


    Organizational Affiliation

    Department of Biosciences and Nutrition, Karolinska Institutet, S-14157 Huddinge, Sweden. nina.heldring@biosci.ki.se



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTROGEN RECEPTORA, B, C252Homo sapiensMutation(s): 0 
Gene Names: ESR1ESRNR3A1
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
NIH Common Fund Data Resources
PHAROS:  P03372
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
AB5 PEPTIDED [auth P], E [auth Q], F [auth R]13synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OHTKi:  0.03999999910593033   nM  BindingDB
OHTIC50:  2.5999999046325684   nM  BindingDB
OHTIC50:  17   nM  BindingDB
OHTEC50:  10.300000190734863   nM  BindingDB
OHTKi:  0.25   nM  BindingDB
OHTIC50:  0.3100000023841858   nM  BindingDB
OHTIC50:  3   nM  BindingDB
OHTEC50:  6   nM  BindingDB
OHTKi:  0.38999998569488525   nM  BindingDB
OHTIC50:  40   nM  BindingDB
OHTEC50:  16   nM  BindingDB
OHTKi:  5.699999809265137   nM  BindingDB
OHTIC50:  0.5   nM  BindingDB
OHTIC50:  2   nM  BindingDB
OHTKi:  0.5   nM  BindingDB
OHTIC50:  5.599999904632568   nM  BindingDB
OHTIC50:  33   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.180 
  • R-Value Observed: 0.181 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 193.707α = 90
b = 193.707β = 90
c = 64.441γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-02-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2016-12-21
    Changes: Source and taxonomy, Structure summary
  • Version 1.3: 2018-01-24
    Changes: Source and taxonomy