2MC5

A bacteriophage transcription regulator inhibits bacterial transcription initiation by -factor displacement


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A bacteriophage transcription regulator inhibits bacterial transcription initiation by sigma-factor displacement.

Liu, B.Shadrin, A.Sheppard, C.Mekler, V.Xu, Y.Severinov, K.Matthews, S.Wigneshweraraj, S.

(2014) Nucleic Acids Res. 42: 4294-4305

  • DOI: 10.1093/nar/gku080
  • Primary Citation of Related Structures:  
  • Also Cited By: 5LGM

  • PubMed Abstract: 
  • Bacteriophages (phages) appropriate essential processes of bacterial hosts to benefit their own development. The multisubunit bacterial RNA polymerase (RNAp) enzyme, which catalyses DNA transcription, is targeted by phage-encoded transcription regula ...

    Bacteriophages (phages) appropriate essential processes of bacterial hosts to benefit their own development. The multisubunit bacterial RNA polymerase (RNAp) enzyme, which catalyses DNA transcription, is targeted by phage-encoded transcription regulators that selectively modulate its activity. Here, we describe the structural and mechanistic basis for the inhibition of bacterial RNAp by the transcription regulator P7 encoded by Xanthomonas oryzae phage Xp10. We reveal that P7 uses a two-step mechanism to simultaneously interact with the catalytic β and β' subunits of the bacterial RNAp and inhibits transcription initiation by inducing the displacement of the σ(70)-factor on initial engagement of RNAp with promoter DNA. The new mode of interaction with and inhibition mechanism of bacterial RNAp by P7 underscore the remarkable variety of mechanisms evolved by phages to interfere with host transcription.


    Organizational Affiliation

    MRC Centre for Molecular Microbiology and Infection, Imperial College London, London SW7 2AZ, UK, Waksman Institute for Microbiology and Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, Piscataway, NJ USA and St. Petersburg State Polytechnical University, St. Petersburg, Russia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
45L
A
73Xanthomonas virus Xp10Mutation(s): 0 
Find proteins for Q8LTJ5 (Xanthomonas virus Xp10)
Go to UniProtKB:  Q8LTJ5
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 
  • Conformers Submitted: 
  • Selection Criteria: all calculated structures submitted 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2014-04-30
    Type: Database references