2BJ4

ESTROGEN RECEPTOR ALPHA LBD IN COMPLEX WITH A PHAGE-DISPLAY DERIVED PEPTIDE ANTAGONIST


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Delineation of a Unique Protein-Protein Interaction Site on the Surface of the Estrogen Receptor

Kong, E.Heldring, N.Gustafsson, J.A.Treuter, E.Hubbard, R.E.Pike, A.C.W.

(2005) Proc Natl Acad Sci U S A 102: 3593

  • DOI: 10.1073/pnas.0407189102
  • Primary Citation of Related Structures:  
    2BJ4

  • PubMed Abstract: 
  • Recent studies have identified a series of estrogen receptor (ER)-interacting peptides that recognize sites that are distinct from the classic coregulator recruitment (AF2) region. Here, we report the structural and functional characterization of an ERalpha-specific peptide that binds to the liganded receptor in an AF2-independent manner ...

    Recent studies have identified a series of estrogen receptor (ER)-interacting peptides that recognize sites that are distinct from the classic coregulator recruitment (AF2) region. Here, we report the structural and functional characterization of an ERalpha-specific peptide that binds to the liganded receptor in an AF2-independent manner. The 2-A crystal structure of the ER/peptide complex reveals a binding site that is centered on a shallow depression on the beta-hairpin face of the ligand-binding domain. The peptide binds in an unusual extended conformation and makes multiple contacts with the ligand-binding domain. The location and architecture of the binding site provides an insight into the peptide's ER subtype specificity and ligand interaction preferences. In vivo, an engineered coactivator containing the peptide motif is able to strongly enhance the transcriptional activity of liganded ERalpha, particularly in the presence of 4-hydroxytamoxifen. Furthermore, disruption of this binding surface alters ER's response to the coregulator TIF2. Together, these results indicate that this previously unknown interaction site represents a bona fide control surface involved in regulating receptor activity.


    Organizational Affiliation

    Structural Biology Laboratory, Chemistry Department, University of York, York YO10 5YW, United Kingdom.



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
PEPTIDE ANTAGONIST CD11synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OHT
Query on OHT

Download Ideal Coordinates CCD File 
A, B
4-HYDROXYTAMOXIFEN
C26 H29 N O2
TXUZVZSFRXZGTL-QPLCGJKRSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CCS
Query on CCS
BL-PEPTIDE LINKINGC5 H9 N O4 SCYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OHTIC50:  3   nM  BindingDB
OHTIC50:  0.3100000023841858   nM  BindingDB
OHTEC50:  6   nM  BindingDB
OHTKi:  5.699999809265137   nM  BindingDB
OHTKi:  0.25   nM  BindingDB
OHTKi:  0.38999998569488525   nM  BindingDB
OHTIC50:  17   nM  BindingDB
OHTIC50:  2.5999999046325684   nM  BindingDB
OHTIC50:  33   nM  BindingDB
OHTKi:  0.5   nM  BindingDB
OHTEC50:  16   nM  BindingDB
OHTIC50:  0.5   nM  BindingDB
OHTIC50:  2   nM  BindingDB
OHTIC50:  5.599999904632568   nM  BindingDB
OHTEC50:  10.300000190734863   nM  BindingDB
OHTKi:  0.03999999910593033   nM  BindingDB
OHTIC50:  40   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.76α = 90
b = 98.76β = 90
c = 105.64γ = 90
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: 2005-02-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Source and taxonomy