3MWP

Nucleoprotein structure of lassa fever virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cap binding and immune evasion revealed by Lassa nucleoprotein structure.

Qi, X.Lan, S.Wang, W.Schelde, L.M.Dong, H.Wallat, G.D.Ly, H.Liang, Y.Dong, C.

(2010) Nature 468: 779-783

  • DOI: 10.1038/nature09605
  • Primary Citation of Related Structures:  
    3MWP, 3MX2, 3MWT, 3MX5

  • PubMed Abstract: 
  • Lassa virus, the causative agent of Lassa fever, causes thousands of deaths annually and is a biological threat agent, for which there is no vaccine and limited therapy. The nucleoprotein (NP) of Lassa virus has essential roles in viral RNA synthesis ...

    Lassa virus, the causative agent of Lassa fever, causes thousands of deaths annually and is a biological threat agent, for which there is no vaccine and limited therapy. The nucleoprotein (NP) of Lassa virus has essential roles in viral RNA synthesis and immune suppression, the molecular mechanisms of which are poorly understood. Here we report the crystal structure of Lassa virus NP at 1.80 Å resolution, which reveals amino (N)- and carboxy (C)-terminal domains with structures unlike any of the reported viral NPs. The N domain folds into a novel structure with a deep cavity for binding the m7GpppN cap structure that is required for viral RNA transcription, whereas the C domain contains 3'-5' exoribonuclease activity involved in suppressing interferon induction. To our knowledge this is the first X-ray crystal structure solved for an arenaviral NP, which reveals its unexpected functions and indicates unique mechanisms in cap binding and immune evasion. These findings provide great potential for vaccine and drug development.


    Organizational Affiliation

    Biomedical Sciences Research Complex, School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
NucleoproteinABC577Lassa virus JosiahMutation(s): 0 
Gene Names: NNucleoprotein
EC: 3.1.13
Find proteins for P13699 (Lassa virus (strain Mouse/Sierra Leone/Josiah/1976))
Explore P13699 
Go to UniProtKB:  P13699
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
A, B, C
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 176.82α = 90
b = 176.82β = 90
c = 56.47γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SOLVEphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance