4UYF

N-Terminal bromodomain of Human BRD2 with I-BET726 (GSK1324726A)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Discovery of I-Bet726 (Gsk1324726A), a Potent Tetrahydroquinoline Apoa1 Up-Regulator and Selective Bet Bromodomain Inhibitor.

Gosmini, R.Nguyen, V.L.Toum, J.Simon, C.Brusq, J.M.Krysa, G.Mirguet, O.Riou-Eymard, A.M.Boursier, E.V.Trottet, L.Bamborough, P.Clark, H.Chung, C.W.Cutler, L.Demont, E.H.Kaur, R.Lewis, A.J.Schilling, M.B.Soden, P.E.Taylor, S.Walker, A.L.Walker, M.D.Prinjha, R.K.Nicodeme, E.

(2014) J.Med.Chem. 57: 8111

  • DOI: 10.1021/jm5010539
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Through their function as epigenetic readers of the histone code, the BET family of bromodomain-containing proteins regulate expression of multiple genes of therapeutic relevance, including those involved in tumor cell growth and inflammation. BET br ...

    Through their function as epigenetic readers of the histone code, the BET family of bromodomain-containing proteins regulate expression of multiple genes of therapeutic relevance, including those involved in tumor cell growth and inflammation. BET bromodomain inhibitors have profound antiproliferative and anti-inflammatory effects which translate into efficacy in oncology and inflammation models, and the first compounds have now progressed into clinical trials. The exciting biology of the BETs has led to great interest in the discovery of novel inhibitor classes. Here we describe the identification of a novel tetrahydroquinoline series through up-regulation of apolipoprotein A1 and the optimization into potent compounds active in murine models of septic shock and neuroblastoma. At the molecular level, these effects are produced by inhibition of BET bromodomains. X-ray crystallography reveals the interactions explaining the structure-activity relationships of binding. The resulting lead molecule, I-BET726, represents a new, potent, and selective class of tetrahydroquinoline-based BET inhibitors.


    Organizational Affiliation

    Candidate Discovery, ‡Discovery Biology, §DMPK, GlaxoSmithKline Les Ulis, Centre de Recherches François Hyafil, GlaxoSmithKline R&D , 25 Avenue du Québec, 91140 Villebon-sur-Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BROMODOMAIN-CONTAINING PROTEIN 2
A
154Homo sapiensMutation(s): 0 
Gene Names: BRD2 (KIAA9001, RING3)
Find proteins for P25440 (Homo sapiens)
Go to Gene View: BRD2
Go to UniProtKB:  P25440
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
BROMODOMAIN-CONTAINING PROTEIN 2
B, C
154Homo sapiensMutation(s): 0 
Gene Names: BRD2 (KIAA9001, RING3)
Find proteins for P25440 (Homo sapiens)
Go to Gene View: BRD2
Go to UniProtKB:  P25440
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
73B
Query on 73B

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Download CCD File 
A, B, C
4-[(2S,4R)-1-acetyl-4-[(4-chlorophenyl)amino]-2-methyl-1,2,3,4-tetrahydroquinolin-6-yl]benzoic acid
C25 H23 Cl N2 O3
FAWSUKOIROHXAP-NPMXOYFQSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B, C
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
73BIC50: 3.2 - <31623 nM (95) BINDINGDB
73BKd: 25 nM (95) BINDINGDB
73BKd: 4.4 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.179 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 118.064α = 90.00
b = 55.597β = 93.99
c = 67.266γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
PHASERphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-08
    Type: Initial release
  • Version 1.1: 2014-10-22
    Type: Database references