3C99

Structural Basis of Histone H4 Recognition by p55


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.219 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of histone H4 recognition by p55.

Song, J.J.Garlick, J.D.Kingston, R.E.

(2008) Genes Dev 22: 1313-1318

  • DOI: 10.1101/gad.1653308
  • Primary Citation of Related Structures:  
    3C99, 3C9C

  • PubMed Abstract: 
  • p55 is a common component of many chromatin-modifying complexes and has been shown to bind to histones. Here, we present a crystal structure of Drosophila p55 bound to a histone H4 peptide. p55, a predicted WD40 repeat protein, recognizes the first helix of histone H4 via a binding pocket located on the side of a beta-propeller structure ...

    p55 is a common component of many chromatin-modifying complexes and has been shown to bind to histones. Here, we present a crystal structure of Drosophila p55 bound to a histone H4 peptide. p55, a predicted WD40 repeat protein, recognizes the first helix of histone H4 via a binding pocket located on the side of a beta-propeller structure. The pocket cannot accommodate the histone fold of H4, which must be altered to allow p55 binding. Reconstitution experiments show that the binding pocket is important to the function of p55-containing complexes. These data demonstrate that WD40 repeat proteins use various surfaces to direct the modification of histones.


    Organizational Affiliation

    Department of Molecular Biology, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Chromatin assembly factor 1 p55 subunitA432Drosophila melanogasterMutation(s): 0 
Gene Names: Caf1Caf1-55CG4236
UniProt
Find proteins for Q24572 (Drosophila melanogaster)
Explore Q24572 
Go to UniProtKB:  Q24572
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ24572
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.219 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 151.121α = 90
b = 151.121β = 90
c = 98.013γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHASESphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-05-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance