4X2I

Discovery of benzotriazolo diazepines as orally-active inhibitors of BET bromodomains: Crystal structure of BRD4 with CPI-13


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.138 
  • R-Value Observed: 0.141 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Discovery of Benzotriazolo[4,3-d][1,4]diazepines as Orally Active Inhibitors of BET Bromodomains.

Taylor, A.M.Vaswani, R.G.Gehling, V.S.Hewitt, M.C.Leblanc, Y.Audia, J.E.Bellon, S.Cummings, R.T.Cote, A.Harmange, J.C.Jayaram, H.Joshi, S.Lora, J.M.Mertz, J.A.Neiss, A.Pardo, E.Nasveschuk, C.G.Poy, F.Sandy, P.Setser, J.W.Sims, R.J.Tang, Y.Albrecht, B.K.

(2016) ACS Med Chem Lett 7: 145-150

  • DOI: 10.1021/ml500411h
  • Primary Citation of Related Structures:  
    4Z1S, 4Z1Q, 4X2I

  • PubMed Abstract: 
  • Inhibition of the bromodomains of the BET family, of which BRD4 is a member, has been shown to decrease myc and interleukin (IL) 6 in vivo, markers that are of therapeutic relevance to cancer and inflammatory disease, respectively. Herein we report s ...

    Inhibition of the bromodomains of the BET family, of which BRD4 is a member, has been shown to decrease myc and interleukin (IL) 6 in vivo, markers that are of therapeutic relevance to cancer and inflammatory disease, respectively. Herein we report substituted benzo[b]isoxazolo[4,5-d]azepines and benzotriazolo[4,3-d][1,4]diazepines as fragment-derived novel inhibitors of the bromodomain of BRD4. Compounds from these series were potent and selective in cells, and subsequent optimization of microsomal stability yielded representatives that demonstrated dose- and time-dependent reduction of plasma IL-6 in mice.


    Organizational Affiliation

    Constellation Pharmaceuticals , 215 First Street, Suite 200, Cambridge, Massachusetts 02142, United States.



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 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3X0
Query on 3X0

Download CCD File 
A
(4R)-6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-[1,2,4]triazolo[4,3-a][1,5]benzodiazepine
C18 H17 Cl N4
DGXRMQACSNETBM-GFCCVEGCSA-N
 Ligand Interaction
FMT
Query on FMT

Download CCD File 
A
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3X0IC50:  350   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.138 
  • R-Value Observed: 0.141 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.905α = 90
b = 48.181β = 90
c = 78.314γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-11-11
    Type: Initial release
  • Version 1.1: 2016-03-30
    Changes: Database references