2L84

Solution NMR structures of CBP bromodomain with small molecule j28


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A Small Molecule Binding to the Coactivator CREB-Binding Protein Blocks Apoptosis in Cardiomyocytes.

Borah, J.C.Mujtaba, S.Karakikes, I.Zeng, L.Muller, M.Patel, J.Moshkina, N.Morohashi, K.Zhang, W.Gerona-Navarro, G.Hajjar, R.J.Zhou, M.M.

(2011) Chem Biol 18: 531-541

  • DOI: 10.1016/j.chembiol.2010.12.021
  • Primary Citation of Related Structures:  
    2L85, 2L84

  • PubMed Abstract: 
  • As a master transcription factor in cellular responses to external stress, tumor suppressor p53 is tightly regulated. Excessive p53 activity during myocardial ischemia causes irreversible cellular injury and cardiomyocyte death. p53 activation is dependent on lysine acetylation by the lysine acetyltransferase and transcriptional coactivator CREB-binding protein (CBP) and on acetylation-directed CBP recruitment for p53 target gene expression ...

    As a master transcription factor in cellular responses to external stress, tumor suppressor p53 is tightly regulated. Excessive p53 activity during myocardial ischemia causes irreversible cellular injury and cardiomyocyte death. p53 activation is dependent on lysine acetylation by the lysine acetyltransferase and transcriptional coactivator CREB-binding protein (CBP) and on acetylation-directed CBP recruitment for p53 target gene expression. Here, we report a small molecule ischemin, developed with a structure-guided approach to inhibit the acetyl-lysine binding activity of the bromodomain of CBP. We show that ischemin alters post-translational modifications on p53 and histones, inhibits p53 interaction with CBP and transcriptional activity in cells, and prevents apoptosis in ischemic cardiomyocytes. Our study suggests small molecule modulation of acetylation-mediated interactions in gene transcription as a new approach to therapeutic interventions of human disorders such as myocardial ischemia.


    Organizational Affiliation

    Department of Structural and Chemical Biology, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CREB-binding proteinA121Homo sapiensMutation(s): 0 
Gene Names: CREBBPCBP
EC: 2.3.1.48 (PDB Primary Data), 2.3.1 (UniProt)
Find proteins for Q92793 (Homo sapiens)
Explore Q92793 
Go to UniProtKB:  Q92793
NIH Common Fund Data Resources
PHAROS:  Q92793
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
J28
Query on J28

Download Ideal Coordinates CCD File 
B [auth A]5-[(E)-(2-amino-4-hydroxy-5-methylphenyl)diazenyl]-2,4-dimethylbenzenesulfonic acid
C15 H17 N3 O4 S
UUECJWRVDTUDCB-ISLYRVAYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
J28IC50:  5000   nM  BindingDB
J28Kd:  19600   nM  BindingDB
J28Kd :  19000   nM  PDBBind
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2L84 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-01-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance