3JSB

Crystal structure of the N-terminal domain of the Lymphocytic Choriomeningitis Virus L protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The N-terminal domain of the arenavirus L protein is an RNA endonuclease essential in mRNA transcription

Morin, B.Coutard, B.Lelke, M.Ferron, F.P.Kerber, R.Jamal, S.Frangeul, A.Baronti, C.Charrel, R.de Lamballerie, X.Vonrhein, C.Lescar, J.Bricogne, G.Gunther, S.Canard, B.

(2010) Plos Pathog. 6: e1001038-e1001038

  • DOI: 10.1371/journal.ppat.1001038

  • PubMed Abstract: 
  • Arenaviridae synthesize viral mRNAs using short capped primers presumably acquired from cellular transcripts by a 'cap-snatching' mechanism. Here, we report the crystal structure and functional characterization of the N-terminal 196 residues (NL1) of ...

    Arenaviridae synthesize viral mRNAs using short capped primers presumably acquired from cellular transcripts by a 'cap-snatching' mechanism. Here, we report the crystal structure and functional characterization of the N-terminal 196 residues (NL1) of the L protein from the prototypic arenavirus: lymphocytic choriomeningitis virus. The NL1 domain is able to bind and cleave RNA. The 2.13 Å resolution crystal structure of NL1 reveals a type II endonuclease α/β architecture similar to the N-terminal end of the influenza virus PA protein. Superimposition of both structures, mutagenesis and reverse genetics studies reveal a unique spatial arrangement of key active site residues related to the PD…(D/E)XK type II endonuclease signature sequence. We show that this endonuclease domain is conserved and active across the virus families Arenaviridae, Bunyaviridae and Orthomyxoviridae and propose that the arenavirus NL1 domain is the Arenaviridae cap-snatching endonuclease.


    Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, CNRS and Universités d'Aix-Marseille I et II, UMR 6098, ESIL Case 925, Marseille, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA-directed RNA polymerase
A, B
204Lymphocytic choriomeningitis virus (strain Armstrong)Mutation(s): 2 
Gene Names: L
EC: 2.7.7.48, 3.1.-.-
Find proteins for P14240 (Lymphocytic choriomeningitis virus (strain Armstrong))
Go to UniProtKB:  P14240
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.199 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 145.010α = 90.00
b = 159.350β = 90.00
c = 52.620γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
BUSTERrefinement
MOLREPphasing
DNAdata collection
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2012-02-15
    Type: Refinement description