Crystal structure of p300 ZZ domain in complex with histone H3 peptide

Experimental Data Snapshot

  • Resolution: 1.95 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


The ZZ domain of p300 mediates specificity of the adjacent HAT domain for histone H3.

Zhang, Y.Xue, Y.Shi, J.Ahn, J.Mi, W.Ali, M.Wang, X.Klein, B.J.Wen, H.Li, W.Shi, X.Kutateladze, T.G.

(2018) Nat Struct Mol Biol 25: 841-849

  • DOI: https://doi.org/10.1038/s41594-018-0114-9
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human p300 is a transcriptional co-activator and a major acetyltransferase that acetylates histones and other proteins facilitating gene transcription. The activity of p300 relies on the fine-tuned interactome that involves a dozen p300 domains and hundreds of binding partners and links p300 to a wide range of vital signaling events. Here, we report a novel function of the ZZ-type zinc finger (ZZ) of p300 as a reader of histone H3. We show that the ZZ domain and acetyllysine-recognizing bromodomain of p300 play critical roles in modulating p300 enzymatic activity and its association with chromatin. The acetyllysine binding function of bromodomain is essential for acetylation of histones H3 and H4, whereas interaction of the ZZ domain with H3 promotes selective acetylation of the histone H3K27 and H3K18 sites.

  • Organizational Affiliation

    Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Histone H3 peptide-Histone acetyltransferase p300 Chimeric protein57Homo sapiensMutation(s): 0 
EC: (PDB Primary Data), 2.3.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for Q09472 (Homo sapiens)
Explore Q09472 
Go to UniProtKB:  Q09472
PHAROS:  Q09472
GTEx:  ENSG00000100393 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ09472
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.95 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.212 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.026α = 90
b = 44.026β = 90
c = 85.904γ = 90
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-09-12
    Changes: Data collection, Database references
  • Version 1.2: 2018-09-19
    Changes: Data collection, Database references
  • Version 1.3: 2024-03-13
    Changes: Data collection, Database references