1GXC

FHA domain from human Chk2 kinase in complex with a synthetic phosphopeptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and Functional Versatility of the Fha Domain in DNA-Damage Signaling by the Tumor Suppressor Kinase Chk2

Li, J.Williams, B.L.Haire, L.F.Goldberg, M.Wilker, E.Durocher, D.Yaffe, M.B.Jackson, S.P.Smerdon, S.J.

(2002) Mol.Cell 9: 1045


  • PubMed Abstract: 
  • The Chk2 Ser/Thr kinase plays crucial, evolutionarily conserved roles in cellular responses to DNA damage. Identification of two pro-oncogenic mutations within the Chk2 FHA domain has highlighted its importance for Chk2 function in checkpoint activat ...

    The Chk2 Ser/Thr kinase plays crucial, evolutionarily conserved roles in cellular responses to DNA damage. Identification of two pro-oncogenic mutations within the Chk2 FHA domain has highlighted its importance for Chk2 function in checkpoint activation. The X-ray structure of the Chk2 FHA domain in complex with an in vitro selected phosphopeptide motif reveals the determinants of binding specificity and shows that both mutations are remote from the peptide binding site. We show that the Chk2 FHA domain mediates ATM-dependent Chk2 phosphorylation and targeting of Chk2 to in vivo binding partners such as BRCA1 through either or both of two structurally distinct mechanisms. Although phospho-dependent binding is important for Chk2 activity, previously uncharacterized phospho-independent FHA domain interactions appear to be the primary target of oncogenic lesions.


    Organizational Affiliation

    Division of Protein Structure, National Institute for Medical Research, The Ridgeway, Mill Hill, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE-PROTEIN KINASE CHK2
A, D, G, J
149Homo sapiensGene Names: CHEK2 (CDS1, CHK2, RAD53)
EC: 2.7.11.1
Find proteins for O96017 (Homo sapiens)
Go to Gene View: CHEK2
Go to UniProtKB:  O96017
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SYNTHETIC PHOSPHOPEPTIDE
B, E, H, K
10N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
B, E, H, K
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.231 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 79.824α = 90.00
b = 82.884β = 90.00
c = 129.857γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-06-13
    Type: Initial release
  • Version 1.1: 2016-12-21
    Type: Derived calculations, Non-polymer description, Other, Source and taxonomy, Structure summary, Version format compliance