4N3W

Crystal Structure of the Bromodomain-PHD Finger Module of Human Transcriptional Co-Activator CBP in complex with Acetylated Histone 4 Peptide (H4K20ac).


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Insights into Acetylated-Histone H4 Recognition by the Bromodomain-PHD Finger Module of Human Transcriptional Coactivator CBP.

Plotnikov, A.N.Yang, S.Zhou, T.J.Rusinova, E.Frasca, A.Zhou, M.M.

(2014) Structure 22: 353-360

  • DOI: 10.1016/j.str.2013.10.021
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bromodomain functions as the acetyl-lysine binding domains to regulate gene transcription in chromatin. Bromodomains are rapidly emerging as new epigenetic drug targets for human diseases. However, owing to their transient nature and modest affinity, ...

    Bromodomain functions as the acetyl-lysine binding domains to regulate gene transcription in chromatin. Bromodomains are rapidly emerging as new epigenetic drug targets for human diseases. However, owing to their transient nature and modest affinity, histone-binding selectivity of bromodomains has remained mostly elusive. Here, we report high-resolution crystal structures of the bromodomain-PHD tandem module of human transcriptional coactivator CBP bound to lysine-acetylated histone H4 peptides. The structures reveal that the PHD finger serves a structural role in the tandem module and that the bromodomain prefers lysine-acetylated motifs comprising a hydrophobic or aromatic residue at -2 and a lysine or arginine at -3 or -4 position from the acetylated lysine. Our study further provides structural insights into distinct modes of singly and diacetylated histone H4 recognition by the bromodomains of CBP and BRD4 that function differently as a transcriptional coactivator and chromatin organizer, respectively, explaining their distinct roles in control of gene expression in chromatin.


    Organizational Affiliation

    Department of Structural and Chemical Biology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CREB-binding protein
A
237Homo 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
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H4 peptide
C
15Homo sapiensMutation(s): 0 
Gene Names: HIST1H4A, HIST1H4B, HIST1H4C, HIST1H4D, HIST1H4E, HIST1H4F, HIST1H4H, HIST1H4I, HIST1H4J, HIST1H4K, HIST1H4L, HIST2H4A, HIST2H4B, HIST4H4 (H4/A, H4FA, H4/I, H4FI, H4/G, H4FG, H4/B, H4FB, H4/J, H4FJ, H4/C, H4FC, H4/H, H4FH, H4/M, H4FM, H4/E, H4FE, H4/D, H4FD, H4/K, H4FK, H4/N, H4F2, H4FN, HIST2H4, H4/O, H4FO)
Find proteins for P62805 (Homo sapiens)
Go to UniProtKB:  P62805
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY
C
L-PEPTIDE LINKINGC8 H16 N2 O3LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.233 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 92.460α = 90.00
b = 59.312β = 102.96
c = 53.444γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data scaling
REFMACrefinement
HKL-2000data reduction
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-29
    Type: Initial release
  • Version 1.1: 2014-03-12
    Type: Database references
  • Version 1.2: 2018-02-14
    Type: Experimental preparation