Bromodomain from GCN5 complexed with acetylated H4 peptide

Experimental Data Snapshot

  • Resolution: 1.87 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.187 

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The Structural Basis for the Recognition of Acetylated Histone H4 by the Bromodomain of Histone Acetyltransferase Gcn5P

Owen, D.J.Ornaghi, P.Yang, J.C.Lowe, N.Evans, P.R.Ballario, P.Neuhaus, D.Filetici, P.Travers, A.A.

(2000) EMBO J 19: 6141

  • DOI: https://doi.org/10.1093/emboj/19.22.6141
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The bromodomain is an approximately 110 amino acid module found in histone acetyltransferases and the ATPase component of certain nucleosome remodelling complexes. We report the crystal structure at 1.9 A resolution of the Saccharomyces cerevisiae Gcn5p bromodomain complexed with a peptide corresponding to residues 15-29 of histone H4 acetylated at the zeta-N of lysine 16. We show that this bromodomain preferentially binds to peptides containing an N:-acetyl lysine residue. Only residues 16-19 of the acetylated peptide interact with the bromodomain. The primary interaction is the N:-acetyl lysine binding in a cleft with the specificity provided by the interaction of the amide nitrogen of a conserved asparagine with the oxygen of the acetyl carbonyl group. A network of water-mediated H-bonds with protein main chain carbonyl groups at the base of the cleft contributes to the binding. Additional side chain binding occurs on a shallow depression that is hydrophobic at one end and can accommodate charge interactions at the other. These findings suggest that the Gcn5p bromodomain may discriminate between different acetylated lysine residues depending on the context in which they are displayed.

  • Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK and Centro di studio per gli Acidi Nucleici, CNR, c/o Dipartimento di Genetica e Biologia Molecolare, Università 'La Sapienza', P.le A.Moro 5, 00185 Roma, Italy.

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TRANSCRIPTIONAL ACTIVATOR GCN5121Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: GCN5
Find proteins for Q03330 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q03330 
Go to UniProtKB:  Q03330
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ03330
Sequence Annotations
  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
HISTONE H4B [auth P]15Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P02309 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P02309 
Go to UniProtKB:  P02309
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02309
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on ALY
Experimental Data & Validation

Experimental Data

  • Resolution: 1.87 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.187 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.68α = 90
b = 71.92β = 90
c = 89.2γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-24
    Type: Initial release
  • Version 1.1: 2012-11-28
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance