2JFA

ESTROGEN RECEPTOR ALPHA LBD IN COMPLEX WITH AN AFFINITY-SELECTED COREPRESSOR PEPTIDE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 

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 RECEPTOR A252Homo 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:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ESTROGEN RECEPTOR B252Homo 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
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
COREPRESSOR PEPTIDE PQ16synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CCS
Query on CCS
BL-PEPTIDE LINKINGC5 H9 N O4 SCYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
RALEC50:  2.4000000953674316   nM  BindingDB
RALIC50:  0.20000000298023224   nM  BindingDB
RALKi:  0.4300000071525574   nM  BindingDB
RALIC50:  22   nM  BindingDB
RALIC50:  1.7999999523162842   nM  BindingDB
RALIC50:  24   nM  BindingDB
RALKi:  0.4000000059604645   nM  BindingDB
RALIC50:  222   nM  BindingDB
RALIC50:  0.7300000190734863   nM  BindingDB
RALKi:  0.029999999329447746   nM  BindingDB
RALIC50:  0.3400000035762787   nM  BindingDB
RALEC50:  4.320000171661377   nM  BindingDB
RALIC50:  170   nM  BindingDB
RALKi:  0.3700000047683716   nM  BindingDB
RALIC50:  0.4699999988079071   nM  BindingDB
RALIC50:  0.7200000286102295   nM  BindingDB
RALIC50:  7   nM  BindingDB
RALEC50:  22   nM  BindingDB
RALIC50:  7.699999809265137   nM  BindingDB
RALKi:  0.2199999988079071   nM  BindingDB
RALIC50:  0.8899999856948853   nM  BindingDB
RALIC50:  20.600000381469727   nM  BindingDB
RALIC50:  0.699999988079071   nM  BindingDB
RALIC50:  4   nM  BindingDB
RALIC50:  0.699999988079071   nM  BindingDB
RALIC50:  0.30000001192092896   nM  BindingDB
RALIC50:  1.899999976158142   nM  BindingDB
RALIC50:  0.46000000834465027   nM  BindingDB
RALKi:  2   nM  BindingDB
RALKi:  0.3799999952316284   nM  BindingDB
RALIC50:  2   nM  BindingDB
RALIC50:  7   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.55 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.573α = 90
b = 126.573β = 90
c = 113.429γ = 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