5E15

Crystal Structure of the ER-alpha Ligand-binding Domain in Complex with the Cyclofenil Derivative 4,4'-{[4-(2-hydroxyethyl)cyclohexylidene]methanediyl}diphenol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report



Literature

Predictive features of ligand-specific signaling through the estrogen receptor.

Nwachukwu, J.C.Srinivasan, S.Zheng, Y.Wang, S.Min, J.Dong, C.Liao, Z.Nowak, J.Wright, N.J.Houtman, R.Carlson, K.E.Josan, J.S.Elemento, O.Katzenellenbogen, J.A.Zhou, H.B.Nettles, K.W.

(2016) Mol Syst Biol 12: 864-864

  • DOI: 10.15252/msb.20156701
  • Primary Citation of Related Structures:  
    5DIE, 5DID, 5DIG, 5DI7, 5DK9, 5DKS, 5DL4, 5DKE, 5DKG, 5DKB

  • PubMed Abstract: 
  • Some estrogen receptor-α (ERα)-targeted breast cancer therapies such as tamoxifen have tissue-selective or cell-specific activities, while others have similar activities in different cell types. To identify biophysical determinants of cell-specific s ...

    Some estrogen receptor-α (ERα)-targeted breast cancer therapies such as tamoxifen have tissue-selective or cell-specific activities, while others have similar activities in different cell types. To identify biophysical determinants of cell-specific signaling and breast cancer cell proliferation, we synthesized 241 ERα ligands based on 19 chemical scaffolds, and compared ligand response using quantitative bioassays for canonical ERα activities and X-ray crystallography. Ligands that regulate the dynamics and stability of the coactivator-binding site in the C-terminal ligand-binding domain, called activation function-2 (AF-2), showed similar activity profiles in different cell types. Such ligands induced breast cancer cell proliferation in a manner that was predicted by the canonical recruitment of the coactivators NCOA1/2/3 and induction of the GREB1 proliferative gene. For some ligand series, a single inter-atomic distance in the ligand-binding domain predicted their proliferative effects. In contrast, the N-terminal coactivator-binding site, activation function-1 (AF-1), determined cell-specific signaling induced by ligands that used alternate mechanisms to control cell proliferation. Thus, incorporating systems structural analyses with quantitative chemical biology reveals how ligands can achieve distinct allosteric signaling outcomes through ERα.


    Organizational Affiliation

    Department of Cancer Biology, The Scripps Research Institute, Jupiter, FL, USA knettles@scripps.edu jkatzene@illinois.edu zhouhb@whu.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Estrogen receptorAB257Homo sapiensMutation(s): 1 
Gene Names: ESR1ESRNR3A1
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
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear receptor coactivator 2CD14Homo sapiensMutation(s): 0 
Gene Names: NCOA2BHLHE75SRC2TIF2
Find proteins for Q15596 (Homo sapiens)
Explore Q15596 
Go to UniProtKB:  Q15596
NIH Common Fund Data Resources
PHAROS  Q15596
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5KA
Query on 5KA

Download CCD File 
A, B
4,4'-({4-[2-(4-fluorobutoxy)ethyl]cyclohexylidene}methanediyl)diphenol
C25 H31 F O3
KVNYDSVWDPQPMD-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.527α = 90
b = 75.101β = 110.72
c = 57.628γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-05-04
    Type: Initial release