4KRW

Novel re-arrangement of an RsmA/cSRa family protein to create a structurally distinct new RNA-binding family member


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.227 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Rearrangement in an RsmA/CsrA Ortholog of Pseudomonas aeruginosa Creates a Dimeric RNA-Binding Protein, RsmN.

Morris, E.R.Hall, G.Li, C.Heeb, S.Kulkarni, R.V.Lovelock, L.Silistre, H.Messina, M.Camara, M.Emsley, J.Williams, P.Searle, M.S.

(2013) Structure 21: 1659-1671

  • DOI: 10.1016/j.str.2013.07.007
  • Primary Citation of Related Structures:  
    4KJI, 4KRW

  • PubMed Abstract: 
  • In bacteria, the highly conserved RsmA/CsrA family of RNA-binding proteins functions as global posttranscriptional regulators acting on mRNA translation and stability. Through phenotypic complementation of an rsmA mutant in Pseudomonas aeruginosa, we discovered a family member, termed RsmN ...

    In bacteria, the highly conserved RsmA/CsrA family of RNA-binding proteins functions as global posttranscriptional regulators acting on mRNA translation and stability. Through phenotypic complementation of an rsmA mutant in Pseudomonas aeruginosa, we discovered a family member, termed RsmN. Elucidation of the RsmN crystal structure and that of the complex with a hairpin from the sRNA, RsmZ, reveals a uniquely inserted α helix, which redirects the polypeptide chain to form a distinctly different protein fold to the domain-swapped dimeric structure of RsmA homologs. The overall β sheet structure required for RNA recognition is, however, preserved with compensatory sequence and structure differences, allowing the RsmN dimer to target binding motifs in both structured hairpin loops and flexible disordered RNAs. Phylogenetic analysis indicates that, although RsmN appears unique to P. aeruginosa, homologous proteins with the inserted α helix are more widespread and arose as a consequence of a gene duplication event.


    Organizational Affiliation

    School of Chemistry, Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RsmN, a RNA-binding protein of Regulator of Secondary MetabolismA79Pseudomonas aeruginosa UCBPP-PA14Mutation(s): 0 
Gene Names: PA14_68470rsmN
Find proteins for A0A0H2ZIZ8 (Pseudomonas aeruginosa (strain UCBPP-PA14))
Explore A0A0H2ZIZ8 
Go to UniProtKB:  A0A0H2ZIZ8
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download Ideal Coordinates CCD File 
B [auth A], C [auth A]IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.314 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.227 
  • Space Group: P 31 1 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.137α = 90
b = 41.137β = 90
c = 72.53γ = 120
Software Package:
Software NamePurpose
DNAdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2013-05-17 
  • Released Date: 2013-09-04 
  • Deposition Author(s): Li, C.

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-04
    Type: Initial release
  • Version 1.1: 2013-09-25
    Changes: Database references