1A52

ESTROGEN RECEPTOR ALPHA LIGAND-BINDING DOMAIN COMPLEXED TO ESTRADIOL

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 

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This is version 1.3 of the entry. See complete history. 


Literature

Crystallographic comparison of the estrogen and progesterone receptor's ligand binding domains.

Tanenbaum, D.M., Wang, Y., Williams, S.P., Sigler, P.B.

(1998) Proc Natl Acad Sci U S A 95: 5998-6003

  • DOI: 10.1073/pnas.95.11.5998
  • Primary Citation of Related Structures:  
    1A52

  • PubMed Abstract: 

    • The 2.8-A crystal structure of the complex formed by estradiol and the human estrogen receptor-alpha ligand binding domain (hERalphaLBD) is described and compared with the recently reported structure of the progesterone complex of the human progesterone receptor ligand binding domain, as well as with similar structures of steroid/nuclear receptor LBDs solved elsewhere ...

    The 2.8-A crystal structure of the complex formed by estradiol and the human estrogen receptor-alpha ligand binding domain (hERalphaLBD) is described and compared with the recently reported structure of the progesterone complex of the human progesterone receptor ligand binding domain, as well as with similar structures of steroid/nuclear receptor LBDs solved elsewhere. The hormone-bound hERalphaLBD forms a distinctly different and probably more physiologically important dimer interface than its progesterone counterpart. A comparison of the specificity determinants of hormone binding reveals a common structural theme of mutually supported van der Waals and hydrogen-bonded interactions involving highly conserved residues. The previously suggested mechanism by which the estrogen receptor distinguishes estradiol's unique 3-hydroxy group from the 3-keto function of most other steroids is now described in atomic detail. Mapping of mutagenesis results points to a coactivator-binding surface that includes the region around the "signature sequence" as well as helix 12, where the ligand-dependent conformation of the activation function 2 core is similar in all previously solved steroid/nuclear receptor LBDs. A peculiar crystal packing event displaces helix 12 in the hERalphaLBD reported here, suggesting a higher degree of dynamic variability than expected for this critical substructure.

    Organizational Affiliation: 

    Department of Molecular Biophysics and Biochemistry and the Howard Hughes Medical Institute, Yale University, 260 Whitney Avenue, JWG 423, New Haven, CT 06511, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ESTROGEN RECEPTOR A, B258Homo sapiensMutation(s): 0 
Gene Names: ESR, ESR1, NR3A1
Find proteins for P03372 (Homo sapiens)
Explore P03372 
Go to UniProtKB:  P03372
NIH Common Fund Data Resources
PHAROS:  P03372
GTEx:  ENSG00000091831
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 147α = 90
b = 147β = 90
c = 168.9γ = 120
Software Package:
Software NamePurpose
MLPHAREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-09-16
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model