Crystal structure of Escherichia coli transcription-repair coupling factor

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.234 

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Structural basis for bacterial transcription-coupled DNA repair.

Deaconescu, A.M.Chambers, A.L.Smith, A.J.Nickels, B.E.Hochschild, A.Savery, N.J.Darst, S.A.

(2006) Cell 124: 507-520

  • DOI: https://doi.org/10.1016/j.cell.2005.11.045
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Coupling of transcription and DNA repair in bacteria is mediated by transcription-repair coupling factor (TRCF, the product of the mfd gene), which removes transcription elongation complexes stalled at DNA lesions and recruits the nucleotide excision repair machinery to the site. Here we describe the 3.2 A-resolution X-ray crystal structure of Escherichia coli TRCF. The structure consists of a compact arrangement of eight domains, including a translocation module similar to the SF2 ATPase RecG, and a region of structural similarity to UvrB. Biochemical and genetic experiments establish that another domain with structural similarity to the Tudor-like domain of the transcription elongation factor NusG plays a critical role in TRCF/RNA polymerase interactions. Comparison with the translocation module of RecG as well as other structural features indicate that TRCF function involves large-scale conformational changes. These data, along with a structural model for the interaction of TRCF with the transcription elongation complex, provide mechanistic insights into TRCF function.

  • Organizational Affiliation

    The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription-repair coupling factor
A, B
1,151Escherichia coliMutation(s): 0 
Gene Names: mfd
Find proteins for P30958 (Escherichia coli (strain K12))
Explore P30958 
Go to UniProtKB:  P30958
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30958
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.234 
  • R-Value Observed: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 151.87α = 90
b = 161.99β = 105.09
c = 161.73γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-02-28
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-14
    Changes: Data collection, Database references, Derived calculations