Structure of the recombination mediator protein RecF in RecFOR pathway

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report

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ATP-dependent conformational change in ABC-ATPase RecF serves as a switch in DNA repair.

Tang, Q.Liu, Y.P.Shan, H.H.Tian, L.F.Zhang, J.Z.Yan, X.X.

(2018) Sci Rep 8: 2127-2127

  • DOI: https://doi.org/10.1038/s41598-018-20557-0
  • Primary Citation of Related Structures:  
    5Z67, 5Z68, 5Z69

  • PubMed Abstract: 

    RecF is a principal member of the RecF pathway. It interacts with RecO and RecR to initiate homologous recombination by loading RecA recombinases on single-stranded DNA and displacing single-stranded DNA-binding proteins. As an ATP-binding cassette ATPase, RecF exhibits ATP-dependent dimerization and structural homology with Rad50 and SMC proteins. However, the mechanism and action pattern of RecF ATP-dependent dimerization remains unclear. Here, We determined three crystal structures of TTERecF, TTERecF-ATP and TTERecF-ATPɤS from Thermoanaerobacter tengcongensis that reveal a novel ATP-driven RecF dimerization. RecF contains a positively charged tunnel on its dimer interface that is essential to ATP binding. Our structural and biochemical data indicate that the Walker A motif serves as a switch and plays a key role in ATP binding and RecF dimerization. Furthermore, Biolayer interferometry assay results showed that the TTERecF interacted with ATP and formed a dimer, displaying a higher affinity for DNA than that of the TTERecF monomer. Overall, our results provide a solid structural basis for understanding the process of RecF binding with ATP and the functional mechanism of ATP-dependent RecF dimerization.

  • Organizational Affiliation

    National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA replication and repair protein RecF367Caldanaerobacter subterraneus subsp. tengcongensis MB4Mutation(s): 0 
Gene Names: recFTTE0004
Find proteins for Q8RDL3 (Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4))
Explore Q8RDL3 
Go to UniProtKB:  Q8RDL3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8RDL3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.179 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.839α = 90
b = 95.78β = 90
c = 167.456γ = 90
Software Package:
Software NamePurpose
HKL-3000data reduction
HKL-3000data scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31400656

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-18
    Type: Initial release