1ERE

HUMAN ESTROGEN RECEPTOR LIGAND-BINDING DOMAIN IN COMPLEX WITH 17BETA-ESTRADIOL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.218 

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This is version 1.2 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 RECEPTORA, B, C, D, E, F253Homo sapiensMutation(s): 0 
Gene Names: ER ALPHAESR1ESRNR3A1
UniProt & NIH Common Fund Data Resources
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
PHAROS:  P03372
Protein Feature View
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
EST BindingDB:  1ERE Ki: min: 0.11, max: 100 (nM) from 13 assay(s)
Kd: min: 0.2, max: 100 (nM) from 4 assay(s)
IC50: min: 1.00e-2, max: 46 (nM) from 45 assay(s)
EC50: min: 4.00e-3, max: 10 (nM) from 51 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.218 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.48α = 90
b = 115.16β = 98.8
c = 137.38γ = 90
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment  



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