4OC7

Retinoic acid receptor alpha in complex with (E)-3-(3'-allyl-6-hydroxy-[1,1'-biphenyl]-3-yl)acrylic acid and a fragment of the coactivator TIF2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A natural-product switch for a dynamic protein interface.

Scheepstra, M.Nieto, L.Hirsch, A.K.Fuchs, S.Leysen, S.Lam, C.V.in het Panhuis, L.van Boeckel, C.A.Wienk, H.Boelens, R.Ottmann, C.Milroy, L.G.Brunsveld, L.

(2014) Angew Chem Int Ed Engl 53: 6443-6448

  • DOI: 10.1002/anie.201403773
  • Primary Citation of Related Structures:  
    4OC7

  • PubMed Abstract: 
  • Small ligands are a powerful way to control the function of protein complexes via dynamic binding interfaces. The classic example is found in gene transcription where small ligands regulate nuclear receptor binding to coactivator proteins via the dyn ...

    Small ligands are a powerful way to control the function of protein complexes via dynamic binding interfaces. The classic example is found in gene transcription where small ligands regulate nuclear receptor binding to coactivator proteins via the dynamic activation function 2 (AF2) interface. Current ligands target the ligand-binding pocket side of the AF2. Few ligands are known, which selectively target the coactivator side of the AF2, or which can be selectively switched from one side of the interface to the other. We use NMR spectroscopy and modeling to identify a natural product, which targets the retinoid X receptor (RXR) at both sides of the AF2. We then use chemical synthesis, cellular screening and X-ray co-crystallography to split this dual activity, leading to a potent and molecularly efficient RXR agonist, and a first-of-kind inhibitor selective for the RXR/coactivator interaction. Our findings justify future exploration of natural products at dynamic protein interfaces.


    Organizational Affiliation

    Laboratory of Chemical Biology and Institute of Complex Molecular Systems (ICMS), Department of Biomedical Engineering, Technische Universiteit Eindhoven, Den Dolech 2, 5612 AZ Eindhoven (The Netherlands) http://www.tue.nl/cb.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Retinoic acid receptor RXR-alphaA254Homo sapiensMutation(s): 0 
Gene Names: NR2B1RXRA
Find proteins for P19793 (Homo sapiens)
Explore P19793 
Go to UniProtKB:  P19793
NIH Common Fund Data Resources
PHAROS  P19793
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear receptor coactivator 2B13Homo 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
2QO
Query on 2QO

Download CCD File 
A
(2E)-3-[6-hydroxy-3'-(prop-2-en-1-yl)biphenyl-3-yl]prop-2-enoic acid
C18 H16 O3
RHYATHLMUIVCPK-CSKARUKUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.554α = 90
b = 67.554β = 90
c = 110.075γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Refinement description