8AB0

Complex of RecO-RecR-DNA from Thermus thermophilus.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.09 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Mechanism of RecF-RecO-RecR cooperation in bacterial homologous recombination.

Nirwal, S.Czarnocki-Cieciura, M.Chaudhary, A.Zajko, W.Skowronek, K.Chamera, S.Figiel, M.Nowotny, M.

(2023) Nat Struct Mol Biol 30: 650-660

  • DOI: https://doi.org/10.1038/s41594-023-00967-z
  • Primary Citation of Related Structures:  
    8A8J, 8A93, 8AB0, 8BPR

  • PubMed Abstract: 

    In bacteria, one type of homologous-recombination-based DNA-repair pathway involves RecFOR proteins that bind at the junction between single-stranded (ss) and double-stranded (ds) DNA. They facilitate the replacement of SSB protein, which initially covers ssDNA, with RecA, which mediates the search for homologous sequences. However, the molecular mechanism of RecFOR cooperation remains largely unknown. We used Thermus thermophilus proteins to study this system. Here, we present a cryo-electron microscopy structure of the RecF-dsDNA complex, and another reconstruction that shows how RecF interacts with two different regions of the tetrameric RecR ring. Lower-resolution reconstructions of the RecR-RecO subcomplex and the RecFOR-DNA assembly explain how RecO is positioned to interact with ssDNA and SSB, which is proposed to lock the complex on a ssDNA-dsDNA junction. Our results integrate the biochemical data available for the RecFOR system and provide a framework for its complete understanding.


  • Organizational Affiliation

    Laboratory of Protein Structure, International Institute of Molecular and Cell Biology, Warsaw, Poland.


Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Recombination protein RecRA [auth C],
B [auth D],
C [auth E],
D [auth F]
195Thermus thermophilus HB8Mutation(s): 0 
Gene Names: recRTTHA1600
UniProt
Find proteins for Q5SHY0 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SHY0 
Go to UniProtKB:  Q5SHY0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SHY0
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
DNA repair protein RecOE [auth G]230Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHA0623
UniProt
Find proteins for Q5SKM0 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SKM0 
Go to UniProtKB:  Q5SKM0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SKM0
Sequence Annotations
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChains LengthOrganismImage
Oligo1F [auth X]25synthetic construct
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains LengthOrganismImage
Oligo2G [auth Y]40synthetic construct
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.09 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC3.3.2
MODEL REFINEMENTPHENIX1.20.1

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Polish National Science CentrePoland2017/26/A/NZ1/01098

Revision History  (Full details and data files)

  • Version 1.0: 2023-04-26
    Type: Initial release
  • Version 1.1: 2023-05-03
    Changes: Database references
  • Version 1.2: 2023-05-31
    Changes: Database references
  • Version 1.3: 2024-07-24
    Changes: Data collection