3ERT

HUMAN ESTROGEN RECEPTOR ALPHA LIGAND-BINDING DOMAIN IN COMPLEX WITH 4-HYDROXYTAMOXIFEN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

The structural basis of estrogen receptor/coactivator recognition and the antagonism of this interaction by tamoxifen.

Shiau, A.K.Barstad, D.Loria, P.M.Cheng, L.Kushner, P.J.Agard, D.A.Greene, G.L.

(1998) Cell 95: 927-937

  • DOI: 10.1016/s0092-8674(00)81717-1
  • Primary Citation of Related Structures:  
    3ERT, 3ERD

  • PubMed Abstract: 
  • Ligand-dependent activation of transcription by nuclear receptors (NRs) is mediated by interactions with coactivators. Receptor agonists promote coactivator binding, and antagonists block coactivator binding. Here we report the crystal structure of t ...

    Ligand-dependent activation of transcription by nuclear receptors (NRs) is mediated by interactions with coactivators. Receptor agonists promote coactivator binding, and antagonists block coactivator binding. Here we report the crystal structure of the human estrogen receptor alpha (hER alpha) ligand-binding domain (LBD) bound to both the agonist diethylstilbestrol (DES) and a peptide derived from the NR box II region of the coactivator GRIP1 and the crystal structure of the hER alpha LBD bound to the selective antagonist 4-hydroxytamoxifen (OHT). In the DES-LBD-peptide complex, the peptide binds as a short alpha helix to a hydrophobic groove on the surface of the LBD. In the OHT-LBD complex, helix 12 occludes the coactivator recognition groove by mimicking the interactions of the NR box peptide with the LBD. These structures reveal the two distinct mechanisms by which structural features of OHT promote this "autoinhibitory" helix 12 conformation.


    Organizational Affiliation

    Howard Hughes Medical Institute and the Department of Biochemistry and Biophysics, University of California at San Francisco, 94143-0448, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (ESTROGEN RECEPTOR ALPHA)A261Homo sapiensMutation(s): 0 
Gene Names: ESTROGEN RECEPTOR ALPHAESR1ESRNR3A1
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
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OHT
Query on OHT

Download CCD File 
A
4-HYDROXYTAMOXIFEN
C26 H29 N O2
TXUZVZSFRXZGTL-QPLCGJKRSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
OHTEC50:  10.300000190734863   nM  BindingDB
OHTKi:  0.38999998569488525   nM  BindingDB
OHTIC50:  17   nM  BindingDB
OHTIC50:  3   nM  BindingDB
OHTKi:  0.25   nM  BindingDB
OHTKi:  0.03999999910593033   nM  BindingDB
OHTIC50:  0.5   nM  BindingDB
OHTIC50:  2   nM  BindingDB
OHTKi :  0.24899999797344208   nM  PDBBind
OHTIC50:  2.5999999046325684   nM  BindingDB
OHTIC50:  40   nM  BindingDB
OHTIC50:  0.3100000023841858   nM  BindingDB
OHTKi:  5.699999809265137   nM  BindingDB
OHTKi:  0.5   nM  BindingDB
OHTIC50:  5.599999904632568   nM  BindingDB
OHTEC50:  16   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.229 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.242α = 90
b = 58.242β = 90
c = 277.467γ = 120
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-08
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model