1KNE

Chromo domain of HP1 complexed with histone H3 tail containing trimethyllysine 9


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.246 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of HP1 chromodomain bound to a lysine 9-methylated histone H3 tail.

Jacobs, S.A.Khorasanizadeh, S.

(2002) Science 295: 2080-2083

  • DOI: 10.1126/science.1069473
  • Primary Citation of Related Structures:  
    1KNE, 1KNA

  • PubMed Abstract: 
  • The chromodomain of the HP1 family of proteins recognizes histone tails with specifically methylated lysines. Here, we present structural, energetic, and mutational analyses of the complex between the Drosophila HP1 chromodomain and the histone H3 tail with a methyllysine at residue 9, a modification associated with epigenetic silencing ...

    The chromodomain of the HP1 family of proteins recognizes histone tails with specifically methylated lysines. Here, we present structural, energetic, and mutational analyses of the complex between the Drosophila HP1 chromodomain and the histone H3 tail with a methyllysine at residue 9, a modification associated with epigenetic silencing. The histone tail inserts as a beta strand, completing the beta-sandwich architecture of the chromodomain. The methylammonium group is caged by three aromatic side chains, whereas adjacent residues form discerning contacts with one face of the chromodomain. Comparison of dimethyl- and trimethyllysine-containing complexes suggests a role for cation-pi and van der Waals interactions, with trimethylation slightly improving the binding affinity.


    Organizational Affiliation

    Department of Biochemistry and Molecular Genetics, University of Virginia Health System, Charlottesville, VA 22908-0733, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HETEROCHROMATIN PROTEIN 1A69Drosophila melanogasterMutation(s): 4 
Gene Names: Su(var)205HP1CG8409
UniProt
Find proteins for P05205 (Drosophila melanogaster)
Explore P05205 
Go to UniProtKB:  P05205
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Trimethylated Histone H3B [auth P]16N/AMutation(s): 2 
UniProt
Find proteins for P02299 (Drosophila melanogaster)
Explore P02299 
Go to UniProtKB:  P02299
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L
B [auth P]L-PEPTIDE LINKINGC9 H21 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.246 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 33.745α = 90
b = 76.943β = 90
c = 75.947γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
TRUNCATEdata reduction
CNSrefinement
CCP4data scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-03-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance