3MKO

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

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.USA 108: 19967-19972

  • DOI: 10.1073/pnas.1108910108

  • 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 f ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glycoprotein C
A
137Lymphocytic choriomeningitis mammarenavirusMutation(s): 1 
Gene Names: gp-C (GPC)
Find proteins for Q9ICW1 (Lymphocytic choriomeningitis mammarenavirus)
Go to UniProtKB:  Q9ICW1
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
IUM
Query on IUM

Download SDF File 
Download CCD File 
A
URANYL (VI) ION
O2 U
IZLHQJIUOZHTLW-UHFFFAOYSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 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 = 90.00
b = 52.925β = 90.00
c = 191.330γ = 120.00
Software Package:
Software NamePurpose
XDSdata reduction
MAR345data collection
SHARPphasing
BUSTER-TNTrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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