5I83

Crystal structure of the bromodomain of human CREBBP bound to the benzodiazepinone G02773986


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.147 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Fragment-Based Discovery of a Selective and Cell-Active Benzodiazepinone CBP/EP300 Bromodomain Inhibitor (CPI-637).

Taylor, A.M.Cote, A.Hewitt, M.C.Pastor, R.Leblanc, Y.Nasveschuk, C.G.Romero, F.A.Crawford, T.D.Cantone, N.Jayaram, H.Setser, J.Murray, J.Beresini, M.H.de Leon Boenig, G.Chen, Z.Conery, A.R.Cummings, R.T.Dakin, L.A.Flynn, E.M.Huang, O.W.Kaufman, S.Keller, P.J.Kiefer, J.R.Lai, T.Li, Y.Liao, J.Liu, W.Lu, H.Pardo, E.Tsui, V.Wang, J.Wang, Y.Xu, Z.Yan, F.Yu, D.Zawadzke, L.Zhu, X.Zhu, X.Sims, R.J.Cochran, A.G.Bellon, S.Audia, J.E.Magnuson, S.Albrecht, B.K.

(2016) ACS Med Chem Lett 7: 531-536

  • DOI: https://doi.org/10.1021/acsmedchemlett.6b00075
  • Primary Citation of Related Structures:  
    5I83, 5I86, 5I89, 5I8B, 5I8G

  • PubMed Abstract: 

    CBP and EP300 are highly homologous, bromodomain-containing transcription coactivators involved in numerous cellular pathways relevant to oncology. As part of our effort to explore the potential therapeutic implications of selectively targeting bromodomains, we set out to identify a CBP/EP300 bromodomain inhibitor that was potent both in vitro and in cellular target engagement assays and was selective over the other members of the bromodomain family. Reported here is a series of cell-potent and selective probes of the CBP/EP300 bromodomains, derived from the fragment screening hit 4-methyl-1,3,4,5-tetrahydro-2H-benzo[b][1,4]diazepin-2-one.


  • Organizational Affiliation

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


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CREB-binding protein118Homo sapiensMutation(s): 0 
Gene Names: CREBBPCBP
EC: 2.3.1 (UniProt), 2.3.1.48 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q92793 (Homo sapiens)
Explore Q92793 
Go to UniProtKB:  Q92793
PHAROS:  Q92793
GTEx:  ENSG00000005339 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92793
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
68Y
Query on 68Y

Download Ideal Coordinates CCD File 
C [auth A](4R)-4-methyl-7-[(1R)-1-phenylethoxy]-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one
C18 H20 N2 O2
ORPRVEZBBPKRRY-CHWSQXEVSA-N
SCN
Query on SCN

Download Ideal Coordinates CCD File 
B [auth A]THIOCYANATE ION
C N S
ZMZDMBWJUHKJPS-UHFFFAOYSA-M
Binding Affinity Annotations 
IDSourceBinding Affinity
68Y BindingDB:  5I83 IC50: min: 652, max: 4100 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.188 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.147 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.832α = 90
b = 50.885β = 90
c = 80.534γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-20
    Type: Initial release
  • Version 1.1: 2016-06-01
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description