5DBM

Crystal structure of the CBP bromodomain in complex with CPI703


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Regulatory T Cell Modulation by CBP/EP300 Bromodomain Inhibition.

Ghosh, S.Taylor, A.Chin, M.Huang, H.R.Conery, A.R.Mertz, J.A.Salmeron, A.Dakle, P.J.Mele, D.Cote, A.Jayaram, H.Setser, J.W.Poy, F.Hatzivassiliou, G.DeAlmeida-Nagata, D.Sandy, P.Hatton, C.Romero, F.A.Chiang, E.Reimer, T.Crawford, T.Pardo, E.Watson, V.G.Tsui, V.Cochran, A.G.Zawadzke, L.Harmange, J.C.Audia, J.E.Bryant, B.M.Cummings, R.T.Magnuson, S.R.Grogan, J.L.Bellon, S.F.Albrecht, B.K.Sims, R.J.Lora, J.M.

(2016) J.Biol.Chem. 291: 13014-13027

  • DOI: 10.1074/jbc.M115.708560
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Covalent modification of histones is a fundamental mechanism of regulated gene expression in eukaryotes, and interpretation of histone modifications is an essential feature of epigenetic control. Bromodomains are specialized binding modules that inte ...

    Covalent modification of histones is a fundamental mechanism of regulated gene expression in eukaryotes, and interpretation of histone modifications is an essential feature of epigenetic control. Bromodomains are specialized binding modules that interact with acetylated histones, linking chromatin recognition to gene transcription. Because of their ability to function in a domain-specific fashion, selective disruption of bromodomain:acetylated histone interactions with chemical probes serves as a powerful means for understanding biological processes regulated by these chromatin adaptors. Here we describe the discovery and characterization of potent and selective small molecule inhibitors for the bromodomains of CREBBP/EP300 that engage their target in cellular assays. We use these tools to demonstrate a critical role for CREBBP/EP300 bromodomains in regulatory T cell biology. Because regulatory T cell recruitment to tumors is a major mechanism of immune evasion by cancer cells, our data highlight the importance of CREBBP/EP300 bromodomain inhibition as a novel, small molecule-based approach for cancer immunotherapy.


    Organizational Affiliation

    From the Constellation Pharmaceuticals, Inc., Massachusetts 02142 and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CREB-binding protein
A, B, C
118Homo sapiensMutation(s): 0 
Gene Names: CREBBP (CBP)
EC: 2.3.1.48
Find proteins for Q92793 (Homo sapiens)
Go to Gene View: CREBBP
Go to UniProtKB:  Q92793
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
58N
Query on 58N

Download SDF File 
Download CCD File 
A, B, C
(4R)-6-(1-tert-butyl-1H-pyrazol-4-yl)-4-methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-one
C17 H22 N4 O
HPSNXSAYALRMQW-LLVKDONJSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
58NIC50: 350 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.86 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.172 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 110.588α = 90.00
b = 34.034β = 103.93
c = 117.727γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
HKL-2000data scaling
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-04-20
    Type: Initial release
  • Version 1.1: 2016-06-29
    Type: Database references