1Q2C

Crystal Structure of Tetrahymena GCN5 With Bound Coenzyme A and a 19-residue Histone H4 Peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis for histone and phosphohistone binding by the GCN5 histone acetyltransferase

Clements, A.Poux, A.N.Lo, S.Pillus, L.Berger, S.L.Marmorstein, R.

(2003) Mol Cell 12: 461-473

  • DOI: 10.1016/s1097-2765(03)00288-0
  • Primary Citation of Related Structures:  
    1Q2C, 1PU9, 1PUA

  • PubMed Abstract: 
  • Distinct posttranslational modifications on histones occur in specific patterns to mediate certain chromosomal events. For example, on histone H3, phosphorylation at Ser10 can enhance GCN5-mediated Lys14 acetylation to promote transcription. To gain ...

    Distinct posttranslational modifications on histones occur in specific patterns to mediate certain chromosomal events. For example, on histone H3, phosphorylation at Ser10 can enhance GCN5-mediated Lys14 acetylation to promote transcription. To gain insight into the mechanism underlying this synergism, we determined the structure of Tetrahymena GCN5 (tGCN5) and coenzyme A (CoA) bound to unmodified and Ser10-phosphorylated 19 residue histone H3 peptides (H3p19 and H3p19Pi, respectively). The tGCN5/CoA/H3p19 structure reveals that a 12 amino acid core sequence mediates extensive contacts with the protein, providing the structural basis for substrate specificity by the GCN5/PCAF family of histone acetyltransferases. Comparison with the tGCN5/CoA/H3p19Pi structure reveals that phospho-Ser10 and Thr11 mediate significant histone-protein interactions, and nucleate additional interactions distal to the phosphorylation site. Functional studies show that histone H3 Thr11 is necessary for optimal transcription at yGcn5-dependent promoters requiring Ser10 phosphorylation. Together, these studies reveal how one histone modification can modulate another to affect distinct transcriptional signals.


    Organizational Affiliation

    The Wistar Institute, Philadelphia, PA 19104, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
histone acetyltransferase GCN5A162Tetrahymena thermophilaMutation(s): 0 
EC: 2.3.1 (PDB Primary Data), 2.3.1.48 (UniProt)
Find proteins for Q27198 (Tetrahymena thermophila)
Explore Q27198 
Go to UniProtKB:  Q27198
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone H4 peptideB19N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download CCD File 
A
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.132α = 90
b = 65.132β = 90
c = 96.568γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing
CNSrefinement
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-03
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance