2BJ4

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.187 

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.USA 102: 3593

  • DOI: 10.1073/pnas.0407189102

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ESTROGEN RECEPTOR
A
252Homo sapiensMutation(s): 0 
Gene Names: ESR1 (ESR, NR3A1)
Find proteins for P03372 (Homo sapiens)
Go to Gene View: ESR1
Go to UniProtKB:  P03372
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ESTROGEN RECEPTOR
B
252Homo sapiensMutation(s): 0 
Gene Names: ESR1 (ESR, NR3A1)
Find proteins for P03372 (Homo sapiens)
Go to Gene View: ESR1
Go to UniProtKB:  P03372
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PEPTIDE ANTAGONIST
C, D
11N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CCS
Query on CCS
B
L-PEPTIDE LINKINGC5 H9 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.187 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 50.760α = 90.00
b = 98.760β = 90.00
c = 105.640γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-02-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2018-01-24
    Type: Source and taxonomy