Crystal structure of the FHA domain of the Chfr mitotic checkpoint protein complexed with tungstate

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.232 

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Crystal structure of the FHA domain of the Chfr mitotic checkpoint protein and its complex with tungstate.

Stavridi, E.S.Huyen, Y.Loreto, I.R.Scolnick, D.M.Halazonetis, T.D.Pavletich, N.P.Jeffrey, P.D.

(2002) Structure 10: 891-899

  • DOI: https://doi.org/10.1016/s0969-2126(02)00776-1
  • Primary Citation of Related Structures:  
    1LGP, 1LGQ

  • PubMed Abstract: 

    The Chfr mitotic checkpoint protein is frequently inactivated in human cancer. We determined the three-dimensional structure of its FHA domain in its native form and in complex with tungstate, an analog of phosphate. The structures revealed a beta sandwich fold similar to the previously determined folds of the Rad53 N- and C-terminal FHA domains, except that the Rad53 domains were monomeric, whereas the Chfr FHA domain crystallized as a segment-swapped dimer. The ability of the Chfr FHA domain to recognize tungstate suggests that it shares the ability with other FHA domains to bind phosphoproteins. Nevertheless, differences in the sequence and structure of the Chfr and Rad53 FHA domains suggest that FHA domains can be divided into families with distinct binding properties.

  • Organizational Affiliation

    Molecular Genetics Program, Structural Biology Program, Wistar Institute, Philadelphia, PA 19104, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
cell cycle checkpoint protein CHFR116Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q96EP1 (Homo sapiens)
Explore Q96EP1 
Go to UniProtKB:  Q96EP1
GTEx:  ENSG00000072609 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96EP1
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on WO4

Download Ideal Coordinates CCD File 
O4 W
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.232 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.21α = 90
b = 62.21β = 90
c = 54.11γ = 120
Software Package:
Software NamePurpose
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-05-08
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2022-12-21
    Changes: Database references, Derived calculations
  • Version 1.5: 2024-05-22
    Changes: Data collection