1SG5

Solution structure of Yaeo, a Rho-specific inhibitor of transcription termination


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with favorable non-bond energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Solution Structure of YaeO, a Rho-specific Inhibitor of Transcription Termination

Gutierrez, P.Kozlov, G.Gabrielli, L.Elias, D.Osborne, M.J.Gallouzi, I.E.Gehring, K.

(2007) J Biol Chem 282: 23348-23353

  • DOI: 10.1074/jbc.M702010200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Rho-dependent transcription termination is an essential process for the regulation of bacterial gene expression. Thus far, only two Rho-specific inhibitors of bacterial transcription termination have been described, the psu protein from the satellite ...

    Rho-dependent transcription termination is an essential process for the regulation of bacterial gene expression. Thus far, only two Rho-specific inhibitors of bacterial transcription termination have been described, the psu protein from the satellite bacteriophage P4 and YaeO from Escherichia coli. Here, we report the solution structure of YaeO, the first of a Rho-specific inhibitor of transcription termination. YaeO is an acidic protein composed of an N-terminal helix and a seven-stranded beta sandwich. NMR chemical shift perturbation experiments revealed that YaeO binds proximal to the primary nucleic acid binding site of Rho. Based on the NMR titrations, a docked model of the YaeO-Rho complex was calculated. These results suggest that YaeO binds outside the Rho hexamer, acting as a competitive inhibitor of RNA binding. In vitro gel shift assays confirmed the inhibition of nucleic acid binding to Rho. Site-directed mutagenesis showed that the negative character of YaeO is essential for its function in vivo.


    Organizational Affiliation

    Department of Biochemistry, McGill University, Montreal, Quebec H3G 1Y6, Canada.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
orf, hypothetical proteinA86Escherichia coliMutation(s): 0 
Gene Names: yaeO
Find proteins for P0AFW8 (Escherichia coli (strain K12))
Explore P0AFW8 
Go to UniProtKB:  P0AFW8
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with favorable non-bond energy 
  • OLDERADO: 1SG5 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-07-12
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance