3ZQ4

Unusual, dual endo- and exo-nuclease activity in the degradosome explained by crystal structure analysis of RNase J1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

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This is version 1.3 of the entry. See complete history


Literature

Unusual, Dual Endo- and Exonuclease Activity in the Degradosome Explained by Crystal Structure Analysis of Rnase J1.

Newman, J.A.Hewitt, L.Rodrigues, C.Solovyova, A.Harwood, C.R.Lewis, R.J.

(2011) Structure 19: 1241

  • DOI: 10.1016/j.str.2011.06.017
  • Primary Citation of Related Structures:  
    3ZQ4

  • PubMed Abstract: 
  • RNase J is an essential enzyme in Bacillus subtilis with unusual dual endonuclease and 5'-to-3' exonuclease activities that play an important role in the maturation and degradation of mRNA. RNase J is also a component of the recently identified "degradosome" of B ...

    RNase J is an essential enzyme in Bacillus subtilis with unusual dual endonuclease and 5'-to-3' exonuclease activities that play an important role in the maturation and degradation of mRNA. RNase J is also a component of the recently identified "degradosome" of B. subtilis. We report the crystal structure of RNase J1 from B. subtilis to 3.0 Å resolution, analysis of which reveals it to be in an open conformation suitable for binding substrate RNA. RNase J is a member of the β-CASP family of zinc-dependent metallo-β-lactamases. We have exploited this similarity in constructing a model for an RNase J1:RNA complex. Analysis of this model reveals candidate-stacking interactions with conserved aromatic side chains, providing a molecular basis for the observed enzyme activity. Comparisons of the B. subtilis RNase J structure with related enzymes reveal key differences that provide insights into conformational changes during catalysis and the role of the C-terminal domain.


    Organizational Affiliation

    Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle-upon-Tyne NE2 4HH, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RIBONUCLEASE J 1A, B [auth C], C [auth D], D [auth E]555Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: rnjAykqCBSU14530
EC: 3.1
Find proteins for Q45493 (Bacillus subtilis (strain 168))
Explore Q45493 
Go to UniProtKB:  Q45493
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 177.823α = 90
b = 209.43β = 90
c = 74.106γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-09-14
    Type: Initial release
  • Version 1.1: 2018-06-20
    Changes: Advisory, Data collection, Derived calculations, Source and taxonomy
  • Version 1.2: 2019-02-20
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.3: 2019-07-10
    Changes: Data collection