4K59

Crystal Structure of Pseudomonas Aeruginosa RsmF


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.22 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

An unusual CsrA family member operates in series with RsmA to amplify posttranscriptional responses in Pseudomonas aeruginosa.

Marden, J.N.Diaz, M.R.Walton, W.G.Gode, C.J.Betts, L.Urbanowski, M.L.Redinbo, M.R.Yahr, T.L.Wolfgang, M.C.

(2013) Proc Natl Acad Sci U S A 110: 15055-15060

  • DOI: https://doi.org/10.1073/pnas.1307217110
  • Primary Citation of Related Structures:  
    4K59

  • PubMed Abstract: 

    Members of the CsrA family of prokaryotic mRNA-binding proteins alter the translation and/or stability of transcripts needed for numerous global physiological processes. The previously described CsrA family member in Pseudomonas aeruginosa (RsmA) plays a central role in determining infection modality by reciprocally regulating processes associated with acute (type III secretion and motility) and chronic (type VI secretion and biofilm formation) infection. Here we describe a second, structurally distinct RsmA homolog in P. aeruginosa (RsmF) that has an overlapping yet unique regulatory role. RsmF deviates from the canonical 5 β-strand and carboxyl-terminal α-helix topology of all other CsrA proteins by having the α-helix internally positioned. Despite striking changes in topology, RsmF adopts a tertiary structure similar to other CsrA family members and binds a subset of RsmA mRNA targets, suggesting that RsmF activity is mediated through a conserved mechanism of RNA recognition. Whereas deletion of rsmF alone had little effect on RsmA-regulated processes, strains lacking both rsmA and rsmF exhibited enhanced RsmA phenotypes for markers of both type III and type VI secretion systems. In addition, simultaneous deletion of rsmA and rsmF resulted in superior biofilm formation relative to the wild-type or rsmA strains. We show that RsmF translation is derepressed in an rsmA mutant and demonstrate that RsmA specifically binds to rsmF mRNA in vitro, creating a global hierarchical regulatory cascade that operates at the posttranscriptional level.


  • Organizational Affiliation

    Cystic Fibrosis/Pulmonary Research and Treatment Center and Departments of Chemistry, Biochemistry and Biophysics, and Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
RNA BINDING PROTEIN RsmF74Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: PA14_68470
UniProt
Find proteins for A0A0H2ZIZ8 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore A0A0H2ZIZ8 
Go to UniProtKB:  A0A0H2ZIZ8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0H2ZIZ8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.22 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.226 
  • Space Group: P 31 1 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.451α = 90
b = 41.451β = 90
c = 74.048γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-08-28
    Type: Initial release
  • Version 1.1: 2013-09-11
    Changes: Database references
  • Version 1.2: 2013-09-25
    Changes: Database references
  • Version 1.3: 2017-11-15
    Changes: Refinement description
  • Version 1.4: 2024-02-28
    Changes: Data collection, Database references