1Q5X

Structure of OF RRAA (MENG), a protein inhibitor of RNA processing


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The X-ray Structure of Escherichia coli RraA (MenG), A Protein Inhibitor of RNA Processing.

Monzingo, A.F.Gao, J.Qiu, J.Georgiou, G.Robertus, J.D.

(2003) J Mol Biol 332: 1015-1024

  • DOI: 10.1016/s0022-2836(03)00970-7
  • Primary Citation of Related Structures:  
    1Q5X

  • PubMed Abstract: 
  • The Escherichia coli protein regulator of RNase E activity A (RraA) has recently been shown to act as a trans-acting modulator of RNA turnover in bacteria; it binds to the essential endonuclease RNase E and inhibits RNA processing in vivo and in vitr ...

    The Escherichia coli protein regulator of RNase E activity A (RraA) has recently been shown to act as a trans-acting modulator of RNA turnover in bacteria; it binds to the essential endonuclease RNase E and inhibits RNA processing in vivo and in vitro. Here, we report the 2.0A X-ray structure of RraA. The structure reveals a ring-like trimer with a central cavity of approximately 12A in diameter. Based on earlier sequence analysis, RraA had been identified as a putative S-adenosylmethionine:2-demethylmenaquinone and was annotated as MenG. However, an analysis of the RraA structure shows that the protein lacks the structural motifs usually required for methylases. Comparison of the observed fold with that of other proteins (and domains) suggests that the RraA fold is an ancient platform that has been adapted for a wide range of functions. An analysis of the amino acid sequence shows that the E.coli RraA exhibits an ancient relationship to a family of aldolases.


    Related Citations: 
    • RraA: a protein inhibitor of RNase E activity that globally modulates RNA abundance in E. coli.
      LEE, K., ZHAN, X., GAO, J., QIU, J., FANG, Y., MEGANATHAN, R., COHEN, S.N., GEORGIOU, G.
      (2003) Cell 114: 623

    Organizational Affiliation

    Institute for Cellular and Molecular Biology, 1 University Station, University of Texas at Austin, Austin, TX 78712, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
REGULATOR OF RNASE E ACTIVITY AA, B, C161Escherichia coliMutation(s): 0 
Gene Names: menG
Find proteins for P0A8R0 (Escherichia coli (strain K12))
Explore P0A8R0 
Go to UniProtKB:  P0A8R0
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.228 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.454α = 90
b = 93.945β = 132.72
c = 67.949γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
RESOLVEphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-30
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance