4C66

Discovery of Epigenetic Regulator I-BET762: Lead Optimization to Afford a Clinical Candidate Inhibitor of the BET Bromodomains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.87 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of Epigenetic Regulator I-Bet762: Lead Optimization to Afford a Clinical Candidate Inhibitor of the Bet Bromodomains.

Mirguet, O.Gosmini, R.Toum, J.Clement, C.Barnathan, M.Brusq, J.Mordaunt, J.E.Grimes, R.Crowe, M.Pineau, O.Ajakane, M.Daugan, A.Jeffrey, P.Cutler, L.Haynes, A.Smithers, N.Chung, C.Bamborough, P.Uings, I.J.Lewis, T.Witherington, J.Parr, N.Prinjha, R.Nicodeme, E.

(2013) J Med Chem 56: 7501

  • DOI: 10.1021/jm401088k
  • Primary Citation of Related Structures:  
    4C67, 4C66

  • PubMed Abstract: 
  • The bromo and extra C-terminal domain (BET) family of bromodomains are involved in binding epigenetic marks on histone proteins, more specifically acetylated lysine residues. This paper describes the discovery and structure-activity relationships (SA ...

    The bromo and extra C-terminal domain (BET) family of bromodomains are involved in binding epigenetic marks on histone proteins, more specifically acetylated lysine residues. This paper describes the discovery and structure-activity relationships (SAR) of potent benzodiazepine inhibitors that disrupt the function of the BET family of bromodomains (BRD2, BRD3, and BRD4). This work has yielded a potent, selective compound I-BET762 that is now under evaluation in a phase I/II clinical trial for nuclear protein in testis (NUT) midline carcinoma and other cancers.


    Organizational Affiliation

    Centre de Recherches François Hyafil, GlaxoSmithKline R&D , 25 Avenue du Québec, 91140 Villebon-sur-Yvette, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
BROMODOMAIN-CONTAINING PROTEIN 4A126Homo sapiensMutation(s): 0 
Gene Names: BRD4HUNK1
Find proteins for O60885 (Homo sapiens)
Explore O60885 
Go to UniProtKB:  O60885
NIH Common Fund Data Resources
PHAROS  O60885
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
H4C
Query on H4C

Download CCD File 
A
4-(2-chlorophenyl)-2-ethyl-9-methyl-6,8-dihydrothieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepin-10-ium
C17 H16 Cl N4 S
VMZUTJCNQWMAGF-UHFFFAOYSA-O
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
H4CIC50 :  79400   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.87 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.464α = 90
b = 44.664β = 90
c = 78.664γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-09-17 
  • Released Date: 2013-10-02 
  • Deposition Author(s): Chung, C., Mirguet, O.

Revision History 

  • Version 1.0: 2013-10-02
    Type: Initial release
  • Version 1.1: 2013-10-30
    Changes: Database references