2P15

Crystal structure of the ER alpha ligand binding domain with the agonist ortho-trifluoromethylphenylvinyl estradiol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.161 

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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Structural plasticity in the oestrogen receptor ligand-binding domain.

Nettles, K.W.Bruning, J.B.Gil, G.O'Neill, E.E.Nowak, J.Guo, Y.Kim, Y.DeSombre, E.R.Dilis, R.Hanson, R.N.Joachimiak, A.Greene, G.L.

(2007) EMBO Rep 8: 563-568

  • DOI: https://doi.org/10.1038/sj.embor.7400963
  • Primary Citation of Related Structures:  
    2P15

  • PubMed Abstract: 

    The steroid hormone receptors are characterized by binding to relatively rigid, inflexible endogenous steroid ligands. Other members of the nuclear receptor superfamily bind to conformationally flexible lipids and show a corresponding degree of elasticity in the ligand-binding pocket. Here, we report the X-ray crystal structure of the oestrogen receptor alpha (ERalpha) bound to an oestradiol derivative with a prosthetic group, ortho- trifluoromethlyphenylvinyl, which binds in a novel extended pocket in the ligand-binding domain. Unlike ER antagonists with bulky side groups, this derivative is enclosed in the ligand-binding pocket, and acts as a potent agonist. This work shows that steroid hormone receptors can interact with a wider array of pharmacophores than previously thought through structural plasticity in the ligand-binding pocket.


  • Organizational Affiliation

    Department of Cancer Biology, The Scripps Research Institute, 5353 Parkside Drive, Jupiter, Florida 33458, USA. knettles@scripps.edu


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Estrogen receptor
A, B
258Homo sapiensMutation(s): 1 
Gene Names: ESR1ESRNR3A1
UniProt & NIH Common Fund Data Resources
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
PHAROS:  P03372
GTEx:  ENSG00000091831 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03372
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
GRIP peptide
C, D
13N/AMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q15596 (Homo sapiens)
Explore Q15596 
Go to UniProtKB:  Q15596
PHAROS:  Q15596
GTEx:  ENSG00000140396 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15596
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EZT
Query on EZT

Download Ideal Coordinates CCD File 
E [auth A],
F [auth B]
(17BETA)-17-{(E)-2-[2-(TRIFLUOROMETHYL)PHENYL]VINYL}ESTRA-1(10),2,4-TRIENE-3,17-DIOL
C27 H29 F3 O2
WSMPLUQFTPBNJI-NYFISDDFSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
EZT PDBBind:  2P15 Kd: 0.05 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.94 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.158 
  • R-Value Observed: 0.161 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.052α = 90
b = 84.22β = 109.59
c = 58.693γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-05-01
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Advisory, Refinement description
  • Version 1.4: 2021-10-20
    Changes: Advisory, Database references, Derived calculations
  • Version 1.5: 2024-02-21
    Changes: Data collection