3ONI

Crystal Structure of the second bromodomain of human BRD2 in complex with the inhibitor JQ1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Selective inhibition of BET bromodomains.

Filippakopoulos, P.Qi, J.Picaud, S.Shen, Y.Smith, W.B.Fedorov, O.Morse, E.M.Keates, T.Hickman, T.T.Felletar, I.Philpott, M.Munro, S.McKeown, M.R.Wang, Y.Christie, A.L.West, N.Cameron, M.J.Schwartz, B.Heightman, T.D.La Thangue, N.French, C.A.Wiest, O.Kung, A.L.Knapp, S.Bradner, J.E.

(2010) Nature 468: 1067-1073

  • DOI: 10.1038/nature09504
  • Primary Citation of Related Structures:  
    3ONI, 3MXF

  • PubMed Abstract: 
  • Epigenetic proteins are intently pursued targets in ligand discovery. So far, successful efforts have been limited to chromatin modifying enzymes, or so-called epigenetic 'writers' and 'erasers'. Potent inhibitors of histone binding modules have not yet been described ...

    Epigenetic proteins are intently pursued targets in ligand discovery. So far, successful efforts have been limited to chromatin modifying enzymes, or so-called epigenetic 'writers' and 'erasers'. Potent inhibitors of histone binding modules have not yet been described. Here we report a cell-permeable small molecule (JQ1) that binds competitively to acetyl-lysine recognition motifs, or bromodomains. High potency and specificity towards a subset of human bromodomains is explained by co-crystal structures with bromodomain and extra-terminal (BET) family member BRD4, revealing excellent shape complementarity with the acetyl-lysine binding cavity. Recurrent translocation of BRD4 is observed in a genetically-defined, incurable subtype of human squamous carcinoma. Competitive binding by JQ1 displaces the BRD4 fusion oncoprotein from chromatin, prompting squamous differentiation and specific antiproliferative effects in BRD4-dependent cell lines and patient-derived xenograft models. These data establish proof-of-concept for targeting protein-protein interactions of epigenetic 'readers', and provide a versatile chemical scaffold for the development of chemical probes more broadly throughout the bromodomain family.


    Organizational Affiliation

    Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7DQ, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bromodomain containing 2, isoform CRA_a A114Homo sapiensMutation(s): 0 
Gene Names: BRD2DKFZp313H139hCG_17503KIAA9001RING3
Find proteins for P25440 (Homo sapiens)
Explore P25440 
Go to UniProtKB:  P25440
NIH Common Fund Data Resources
PHAROS:  P25440
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
JQ1
Query on JQ1

Download Ideal Coordinates CCD File 
A
(6S)-6-(2-tert-butoxy-2-oxoethyl)-4-(4-chlorophenyl)-2,3,9-trimethyl-6,7-dihydrothieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-10-ium
C23 H26 Cl N4 O2 S
DNVXATUJJDPFDM-KRWDZBQOSA-O
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
NI
Query on NI

Download Ideal Coordinates CCD File 
A
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.184 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.6α = 90
b = 71.71β = 90
c = 31.97γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
CrystalCleardata collection
MOSFLMdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-03-28
    Changes: Structure summary