1L2I

Human Estrogen Receptor alpha Ligand-binding Domain in Complex with (R,R)-5,11-cis-diethyl-5,6,11,12-tetrahydrochrysene-2,8-diol and a Glucocorticoid Receptor Interacting Protein 1 NR box II Peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural characterization of a subtype-selective ligand reveals a novel mode of estrogen receptor antagonism.

Shiau, A.K.Barstad, D.Radek, J.T.Meyers, M.J.Nettles, K.W.Katzenellenbogen, B.S.Katzenellenbogen, J.A.Agard, D.A.Greene, G.L.

(2002) Nat.Struct.Mol.Biol. 9: 359-364

  • DOI: 10.1038/nsb787
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The R,R enantiomer of 5,11-cis-diethyl-5,6,11,12-tetrahydrochrysene-2,8-diol (THC) exerts opposite effects on the transcriptional activity of the two estrogen receptor (ER) subtypes, ER alpha and ER beta. THC acts as an ER alpha agonist and as an ER ...

    The R,R enantiomer of 5,11-cis-diethyl-5,6,11,12-tetrahydrochrysene-2,8-diol (THC) exerts opposite effects on the transcriptional activity of the two estrogen receptor (ER) subtypes, ER alpha and ER beta. THC acts as an ER alpha agonist and as an ER beta antagonist. We have determined the crystal structures of the ER alpha ligand binding domain (LBD) bound to both THC and a fragment of the transcriptional coactivator GRIP1, and the ER beta LBD bound to THC. THC stabilizes a conformation of the ER alpha LBD that permits coactivator association and a conformation of the ER beta LBD that prevents coactivator association. A comparison of the two structures, taken together with functional data, reveals that THC does not act on ER beta through the same mechanisms used by other known ER antagonists. Instead, THC antagonizes ER beta through a novel mechanism we term 'passive antagonism'.


    Related Citations: 
    • Estrogen Receptor Subtype-selective Ligands: Asymmetric Synthesis and Biological Evaluation of cis- and trans-5,11-dialkyl-5,6,11,12-tetrahydrochrysenes
      Meyers, M.J.,Sun, J.,Carlson, K.E.,Katzenellenbogen, B.S.,Katzenellenbogen, J.A.
      (1999) J.Med.Chem. 42: 2456
    • 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


    Organizational Affiliation

    The Howard Hughes Medical Institute and Department of Biochemistry and Biophysics, University of California, San Francisco, California 94143, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ESTROGEN RECEPTOR
A, B
261Homo 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
GLUCOCORTICOID RECEPTOR-INTERACTING PROTEIN 1
C, D
13Mus musculusMutation(s): 0 
Gene Names: Ncoa2 (Grip1, Src2, Tif2)
Find proteins for Q61026 (Mus musculus)
Go to UniProtKB:  Q61026
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
ETC
Query on ETC

Download SDF File 
Download CCD File 
A, B
(R,R)-5,11-CIS-DIETHYL-5,6,11,12-TETRAHYDROCHRYSENE-2,8-DIOL
C22 H24 O2
MASYAWHPJCQLSW-ZIAGYGMSSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CCS
Query on CCS
A, B
L-PEPTIDE LINKINGC5 H9 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 54.545α = 90.00
b = 82.600β = 111.53
c = 59.040γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-01
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance