2LY7

B-flap domain of RNA polymerase (B. subtilis)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

RNA polymerase-induced remodelling of NusA produces a pause enhancement complex.

Ma, C.Mobli, M.Yang, X.Keller, A.N.King, G.F.Lewis, P.J.

(2015) Nucleic Acids Res. 43: 2829-2840

  • DOI: 10.1093/nar/gkv108
  • Primary Citation of Related Structures:  2MT4

  • PubMed Abstract: 
  • Pausing during transcription elongation is a fundamental activity in all kingdoms of life. In bacteria, the essential protein NusA modulates transcriptional pausing, but its mechanism of action has remained enigmatic. By combining structural and func ...

    Pausing during transcription elongation is a fundamental activity in all kingdoms of life. In bacteria, the essential protein NusA modulates transcriptional pausing, but its mechanism of action has remained enigmatic. By combining structural and functional studies we show that a helical rearrangement induced in NusA upon interaction with RNA polymerase is the key to its modulatory function. This conformational change leads to an allosteric re-positioning of conserved basic residues that could enable their interaction with an RNA pause hairpin that forms in the exit channel of the polymerase. This weak interaction would stabilize the paused complex and increases the duration of the transcriptional pause. Allosteric spatial re-positioning of regulatory elements may represent a general approach used across all taxa for modulation of transcription and protein-RNA interactions.


    Organizational Affiliation

    School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW 2308, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase subunit beta
A
149Bacillus subtilis (strain 168)Gene Names: rpoB (crsE, rfm)
EC: 2.7.7.6
Find proteins for P37870 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P37870
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-09-12 
  • Released Date: 2014-03-12 
  • Deposition Author(s): Mobli, M.

Revision History 

  • Version 1.0: 2014-03-12
    Type: Initial release
  • Version 1.1: 2015-12-16
    Type: Database references