1ERR

HUMAN ESTROGEN RECEPTOR LIGAND-BINDING DOMAIN IN COMPLEX WITH RALOXIFENE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Molecular basis of agonism and antagonism in the oestrogen receptor.

Brzozowski, A.M.Pike, A.C.Dauter, Z.Hubbard, R.E.Bonn, T.Engstrom, O.Ohman, L.Greene, G.L.Gustafsson, J.A.Carlquist, M.

(1997) Nature 389: 753-758

  • DOI: 10.1038/39645
  • Primary Citation of Related Structures:  
    1ERR, 1ERE

  • PubMed Abstract: 
  • Oestrogens are involved in the growth, development and homeostasis of a number of tissues. The physiological effects of these steroids are mediated by a ligand-inducible nuclear transcription factor, the oestrogen receptor (ER). Hormone binding to the ligand-binding domain (LBD) of the ER initiates a series of molecular events culminating in the activation or repression of target genes ...

    Oestrogens are involved in the growth, development and homeostasis of a number of tissues. The physiological effects of these steroids are mediated by a ligand-inducible nuclear transcription factor, the oestrogen receptor (ER). Hormone binding to the ligand-binding domain (LBD) of the ER initiates a series of molecular events culminating in the activation or repression of target genes. Transcriptional regulation arises from the direct interaction of the ER with components of the cellular transcription machinery. Here we report the crystal structures of the LBD of ER in complex with the endogenous oestrogen, 17beta-oestradiol, and the selective antagonist raloxifene, at resolutions of 3.1 and 2.6 A, respectively. The structures provide a molecular basis for the distinctive pharmacophore of the ER and its catholic binding properties. Agonist and antagonist bind at the same site within the core of the LBD but demonstrate different binding modes. In addition, each class of ligand induces a distinct conformation in the transactivation domain of the LBD, providing structural evidence of the mechanism of antagonism.


    Organizational Affiliation

    Protein Structure Group, Chemistry Department, University of York, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTROGEN RECEPTOR AB253Homo sapiensMutation(s): 0 
Gene Names: ER ALPHAESR1ESRNR3A1
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
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RAL
Query on RAL

Download Ideal Coordinates CCD File 
A, B
RALOXIFENE
C28 H27 N O4 S
GZUITABIAKMVPG-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CCS
Query on CCS
A,BL-PEPTIDE LINKINGC5 H9 N O4 SCYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
RALIC50:  0.7200000286102295   nM  BindingDB
RALKi:  0.3799999952316284   nM  BindingDB
RALIC50:  0.4699999988079071   nM  BindingDB
RALIC50:  222   nM  BindingDB
RALIC50:  0.20000000298023224   nM  BindingDB
RALIC50:  1.7999999523162842   nM  BindingDB
RALIC50:  0.30000001192092896   nM  BindingDB
RALIC50:  170   nM  BindingDB
RALEC50:  2.4000000953674316   nM  BindingDB
RALKi:  0.4000000059604645   nM  BindingDB
RALKi:  2   nM  BindingDB
RALIC50:  0.46000000834465027   nM  BindingDB
RALIC50:  24   nM  BindingDB
RALKi:  0.3700000047683716   nM  BindingDB
RALIC50:  22   nM  BindingDB
RALIC50:  0.699999988079071   nM  BindingDB
RALIC50:  7.699999809265137   nM  BindingDB
RALKi:  0.4300000071525574   nM  BindingDB
RALIC50:  0.3400000035762787   nM  BindingDB
RALIC50:  0.8899999856948853   nM  BindingDB
RALKi:  0.029999999329447746   nM  BindingDB
RALEC50:  4.320000171661377   nM  BindingDB
RALKi:  0.2199999988079071   nM  BindingDB
RALIC50:  2   nM  BindingDB
RALEC50:  22   nM  BindingDB
RALIC50:  20.600000381469727   nM  BindingDB
RALIC50:  7   nM  BindingDB
RALIC50:  7   nM  BindingDB
RALIC50 :  7.699999809265137   nM  PDBBind
RALIC50:  0.699999988079071   nM  BindingDB
RALIC50:  4   nM  BindingDB
RALIC50:  0.7300000190734863   nM  BindingDB
RALIC50:  1.899999976158142   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.219 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.53α = 90
b = 53.68β = 116.79
c = 102.71γ = 90
Software Package:
Software NamePurpose
MLPHAREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-09-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2013-05-15
    Changes: Atomic model