Crystal Structure of the Lymphocytic Choriomeningitis Virus Membrane Fusion Glycoprotein GP2 in its Postfusion Conformation

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.188 

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X-ray structure of the arenavirus glycoprotein GP2 in its postfusion hairpin conformation

Igonet, S.Vaney, M.C.Vonhrein, C.Bricogne, G.Stura, E.A.Hengartner, H.Eschli, B.Rey, F.A.

(2011) Proc Natl Acad Sci U S A 108: 19967-19972

  • DOI: https://doi.org/10.1073/pnas.1108910108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Arenaviruses are important agents of zoonotic disease worldwide. The virions expose a tripartite envelope glycoprotein complex at their surface, formed by the glycoprotein subunits GP1, GP2 and the stable signal peptide. This complex is responsible for binding to target cells and for the subsequent fusion of viral and host-cell membranes for entry. During this process, the acidic environment of the endosome triggers a fusogenic conformational change in the transmembrane GP2 subunit of the complex. We report here the crystal structure of the recombinant GP2 ectodomain of the lymphocytic choriomeningitis virus, the arenavirus type species, at 1.8-Å resolution. The structure shows the characteristic trimeric coiled coil present in class I viral fusion proteins, with a central stutter that allows a close structural alignment with most of the available structures of class I and III viral fusion proteins. The structure further shows a number of intrachain salt bridges stabilizing the postfusion hairpin conformation, one of which involves an aspartic acid that appears released from a critical interaction with the stable signal peptide upon low pH activation.

  • Organizational Affiliation

    Département de Virologie, Unité de Virologie Structurale, Institut Pasteur, F-75724 Paris Cedex 15, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycoprotein C137Mammarenavirus choriomeningitidisMutation(s): 1 
Gene Names: lcmv-GP
Find proteins for P07399 (Lymphocytic choriomeningitis virus (strain WE))
Explore P07399 
Go to UniProtKB:  P07399
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07399
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.80 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.188 
  • Space Group: P 63 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.925α = 90
b = 52.925β = 90
c = 191.33γ = 120
Software Package:
Software NamePurpose
MAR345data collection
XDSdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-12-14
    Changes: Database references
  • Version 1.3: 2011-12-28
    Changes: Database references
  • Version 1.4: 2017-11-08
    Changes: Refinement description