1S4Z

HP1 chromo shadow domain in complex with PXVXL motif of CAF-1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of HP1/PXVXL motif peptide interactions and HP1 localisation to heterochromatin.

Thiru, A.Nietlispach, D.Mott, H.R.Okuwaki, M.Lyon, D.Nielsen, P.R.Hirshberg, M.Verreault, A.Murzina, N.V.Laue, E.D.

(2004) Embo J. 23: 489-499

  • DOI: 10.1038/sj.emboj.7600088

  • PubMed Abstract: 
  • HP1 family proteins are adaptor molecules, containing two related chromo domains that are required for chromatin packaging and gene silencing. Here we present the structure of the chromo shadow domain from mouse HP1beta bound to a peptide containing ...

    HP1 family proteins are adaptor molecules, containing two related chromo domains that are required for chromatin packaging and gene silencing. Here we present the structure of the chromo shadow domain from mouse HP1beta bound to a peptide containing a consensus PXVXL motif found in many HP1 binding partners. The shadow domain exhibits a novel mode of peptide recognition, where the peptide binds across the dimer interface, sandwiched in a beta-sheet between strands from each monomer. The structure allows us to predict which other shadow domains bind similar PXVXL motif-containing peptides and provides a framework for predicting the sequence specificity of the others. We show that targeting of HP1beta to heterochromatin requires shadow domain interactions with PXVXL-containing proteins in addition to chromo domain recognition of Lys-9-methylated histone H3. Interestingly, it also appears to require the simultaneous recognition of two Lys-9-methylated histone H3 molecules. This finding implies a further complexity to the histone code for regulation of chromatin structure and suggests how binding of HP1 family proteins may lead to its condensation.


    Organizational Affiliation

    Department of Biochemistry, Cambridge Centre for Molecular Recognition, University of Cambridge, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chromobox protein homolog 1
A, B
75Mus musculusMutations: D75E
Gene Names: Cbx1 (Cbx)
Find proteins for P83917 (Mus musculus)
Go to UniProtKB:  P83917
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Chromatin assembly factor 1 subunit A
C
30Mus musculusGene Names: Chaf1a (Caip150)
Find proteins for Q9QWF0 (Mus musculus)
Go to UniProtKB:  Q9QWF0
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1S4Z Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-23
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance