5U2D

Crystal Structure of the ER-alpha Ligand-binding Domain (Y537S) in complex with Oxabicyclic Heptene Sulfonate (OBHS)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and Molecular Mechanisms of Cytokine-Mediated Endocrine Resistance in Human Breast Cancer Cells.

Stender, J.D.Nwachukwu, J.C.Kastrati, I.Kim, Y.Strid, T.Yakir, M.Srinivasan, S.Nowak, J.Izard, T.Rangarajan, E.S.Carlson, K.E.Katzenellenbogen, J.A.Yao, X.Q.Grant, B.J.Leong, H.S.Lin, C.Y.Frasor, J.Nettles, K.W.Glass, C.K.

(2017) Mol Cell 65: 1122-1135.e5

  • DOI: 10.1016/j.molcel.2017.02.008
  • Primary Citation of Related Structures:  
    5U2B, 5U2D

  • PubMed Abstract: 
  • Human breast cancers that exhibit high proportions of immune cells and elevated levels of pro-inflammatory cytokines predict poor prognosis. Here, we demonstrate that treatment of human MCF-7 breast cancer cells with pro-inflammatory cytokines result ...

    Human breast cancers that exhibit high proportions of immune cells and elevated levels of pro-inflammatory cytokines predict poor prognosis. Here, we demonstrate that treatment of human MCF-7 breast cancer cells with pro-inflammatory cytokines results in ERα-dependent activation of gene expression and proliferation, in the absence of ligand or presence of 4OH-tamoxifen (TOT). Cytokine activation of ERα and endocrine resistance is dependent on phosphorylation of ERα at S305 in the hinge domain. Phosphorylation of S305 by IKKβ establishes an ERα cistrome that substantially overlaps with the estradiol (E2)-dependent ERα cistrome. Structural analyses suggest that S305-P forms a charge-linked bridge with the C-terminal F domain of ERα that enables inter-domain communication and constitutive activity from the N-terminal coactivator-binding site, revealing the structural basis of endocrine resistance. ERα therefore functions as a transcriptional effector of cytokine-induced IKKβ signaling, suggesting a mechanism through which the tumor microenvironment controls tumor progression and endocrine resistance.


    Organizational Affiliation

    Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA 92093, USA. Electronic address: ckg@ucsd.edu.



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 2CD13Homo 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
OBH
Query on OBH

Download Ideal Coordinates CCD File 
A, B
cyclohexa-2,5-dien-1-yl (1S,2R,4S)-5,6-bis(4-hydroxyphenyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-sulfonate
C24 H22 O6 S
BDNHEHZCMDJALX-YZUZCNPQSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.171 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.7α = 90
b = 81.36β = 111.07
c = 58.36γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXphasing
DENZOdata reduction
SCALEPACKdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-05
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Refinement description