4Z1Q

Crystal structure of the first bromodomain of human BRD4 bound to benzotriazolo-diazepine scaffold


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 

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:  
    4X2I, 4Z1S, 4Z1Q

  • 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 4AB127Homo 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
558
Query on 558

Download CCD File 
A, B
5-[(4R)-6-(4-chlorophenyl)-1,4-dimethyl-5,6-dihydro-4H-[1,2,4]triazolo[4,3-a][1,5]benzodiazepin-8-yl]pyridin-2-amine
C23 H21 Cl N6
SBRJLPKKZHHGCO-CQSZACIVSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
558IC50:  15   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.205 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 30.293α = 83.07
b = 39.501β = 75.35
c = 57.23γ = 89.85
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-08
    Type: Initial release
  • Version 1.1: 2016-03-30
    Changes: Database references