1LGQ | pdb_00001lgq

Crystal structure of the FHA domain of the Chfr mitotic checkpoint protein

• PDB DOI: https://doi.org/10.2210/pdb1LGQ/pdb

• Classification: CELL CYCLE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2002-04-16 Released: 2002-05-08 
• Deposition Author(s): Stavridi, E.S., Huyen, Y., Loreto, I.R., Scolnick, D.M., Halazonetis, T.D., Pavletich, N.P., Jeffrey, P.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.288 (Depositor), 0.289 (DCC) 
• R-Value Work: 
  0.242 (Depositor), 0.242 (DCC) 

Literature

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

• PubMed: 12121644 
• DOI: https://doi.org/10.1016/s0969-2126(02)00776-1
• Primary Citation 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.

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Organizational Affiliation: 
• Molecular Genetics Program, Structural Biology Program, Wistar Institute, Philadelphia, PA 19104, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 25.52 kDa 
• Atom Count: 1,934 
• Modeled Residue Count: 224 
• Deposited Residue Count: 224 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cell cycle checkpoint protein CHFR	A, B	112	Homo sapiens	Mutation(s): 0  EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for Q96EP1 (Homo sapiens) Explore Q96EP1  Go to UniProtKB:  Q96EP1
PHAROS:  Q96EP1 GTEx:  ENSG00000072609

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.288 (Depositor), 0.289 (DCC) 
• R-Value Work:  0.242 (Depositor), 0.242 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.9	α = 90
b = 52.9	β = 90
c = 77.25	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-05-08 
Deposition Author(s): Stavridi, E.S., Huyen, Y., Loreto, I.R., Scolnick, D.M., Halazonetis, T.D., Pavletich, N.P., Jeffrey, P.D.

Revision History  

• 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: Version format compliance
• Version 1.3: 2022-12-21
  Changes: Database references
• Version 1.4: 2024-05-22
  Changes: Data collection