4DRB

The crystal structure of FANCM bound MHF complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report


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Literature

The structure of the FANCM-MHF complex reveals physical features for functional assembly

Tao, Y.Jin, C.Li, X.Qi, S.Chu, L.Niu, L.Yao, X.Teng, M.

(2012) Nat Commun 3: 782-782

  • DOI: 10.1038/ncomms1779
  • Primary Citation of Related Structures:  
    4DRA, 4DRB

  • PubMed Abstract: 
  • Fanconi anaemia is a rare genetic disease characterized by chromosomal instability and cancer susceptibility. The Fanconi anaemia complementation group protein M (FANCM) forms an evolutionarily conserved DNA-processing complex with MHF1/MHF2 (histone-fold-containing proteins), which is essential for DNA repair in response to genotoxic stress ...

    Fanconi anaemia is a rare genetic disease characterized by chromosomal instability and cancer susceptibility. The Fanconi anaemia complementation group protein M (FANCM) forms an evolutionarily conserved DNA-processing complex with MHF1/MHF2 (histone-fold-containing proteins), which is essential for DNA repair in response to genotoxic stress. Here we present the crystal structures of the MHF1-MHF2 complex alone and bound to a fragment of FANCM (FANCM(661-800), designated FANCM-F). The structures show that MHF1 and MHF2 form a compact tetramer to which FANCM-F binds through a 'dual-V' shaped structure. FANCM-F and (MHF1-MHF2)(2) cooperate to constitute a new DNA-binding site that is coupled to the canonical L1L2 region. Perturbation of the MHF-FANCM-F structural plasticity changes the localization of FANCM in vivo. The MHF-FANCM interaction and its subcellular localization are altered by a disease-associated mutant of FANCM. These findings reveal the molecular basis of MHF-FANCM recognition and provide mechanistic insights into the pathway leading to Fanconi anaemia.


    Organizational Affiliation

    Key Laboratory of Structural Biology, Chinese Academy of Sciences, Hefei, Anhui 230026, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Centromere protein SA, B, D, E, G, H120Homo sapiensMutation(s): 0 
Gene Names: APITD1CENPSFAAP16MHF1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N2Z9 (Homo sapiens)
Explore Q8N2Z9 
Go to UniProtKB:  Q8N2Z9
PHAROS:  Q8N2Z9
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fanconi anemia group M proteinC, F, I141Homo sapiensMutation(s): 0 
Gene Names: FANCMKIAA1596
EC: 3.6.4.13
UniProt & NIH Common Fund Data Resources
Find proteins for Q8IYD8 (Homo sapiens)
Explore Q8IYD8 
Go to UniProtKB:  Q8IYD8
PHAROS:  Q8IYD8
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Centromere protein XJ, K, L, M, N, O84Homo sapiensMutation(s): 0 
Gene Names: STRA13CENPXFAAP10MHF2
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Find proteins for A8MT69 (Homo sapiens)
Explore A8MT69 
Go to UniProtKB:  A8MT69
PHAROS:  A8MT69
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, D, E, G, HL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.63 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.317α = 90
b = 70.025β = 91.41
c = 115.751γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
AutoSolphasing
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-16
    Type: Initial release