2Y26

Transmission defective mutant of Grapevine Fanleaf virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Insights Into Viral Determinants of Nematode Mediated Grapevine Fanleaf Virus Transmission.

Schellenberger, P.Sauter, C.Lorber, B.Bron, P.Trapani, S.Bergdoll, M.Marmonier, A.Schmitt-Keichinger, C.Lemaire, O.Demangeat, G.Ritzenthaler, C.

(2011) Plos Pathog. 7: 2034

  • DOI: 10.1371/journal.ppat.1002034
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Many animal and plant viruses rely on vectors for their transmission from host to host. Grapevine fanleaf virus (GFLV), a picorna-like virus from plants, is transmitted specifically by the ectoparasitic nematode Xiphinema index. The icosahedral capsi ...

    Many animal and plant viruses rely on vectors for their transmission from host to host. Grapevine fanleaf virus (GFLV), a picorna-like virus from plants, is transmitted specifically by the ectoparasitic nematode Xiphinema index. The icosahedral capsid of GFLV, which consists of 60 identical coat protein subunits (CP), carries the determinants of this specificity. Here, we provide novel insight into GFLV transmission by nematodes through a comparative structural and functional analysis of two GFLV variants. We isolated a mutant GFLV strain (GFLV-TD) poorly transmissible by nematodes, and showed that the transmission defect is due to a glycine to aspartate mutation at position 297 (Gly297Asp) in the CP. We next determined the crystal structures of the wild-type GFLV strain F13 at 3.0 Å and of GFLV-TD at 2.7 Å resolution. The Gly297Asp mutation mapped to an exposed loop at the outer surface of the capsid and did not affect the conformation of the assembled capsid, nor of individual CP molecules. The loop is part of a positively charged pocket that includes a previously identified determinant of transmission. We propose that this pocket is a ligand-binding site with essential function in GFLV transmission by X. index. Our data suggest that perturbation of the electrostatic landscape of this pocket affects the interaction of the virion with specific receptors of the nematode's feeding apparatus, and thereby severely diminishes its transmission efficiency. These data provide a first structural insight into the interactions between a plant virus and a nematode vector.


    Related Citations: 
    • Strategies for the Crystallization of Viruses: Using Phase Diagrams and Gels to Produce 3D Crystals of Grapevine Fanleaf Virus.
      Schellenberger, P.,Demangeat, G.,Lemaire, O.,Ritzenthaler, C.,Bergdoll, M.,Olieric, V.,Sauter, C.,Lorber, B.
      (2011) J.Struct.Biol. 174: 344


    Organizational Affiliation

    Institut National de la Recherche Agronomique, INRA/UDS UMR 1131, Colmar, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
COAT PROTEIN
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T
504Grapevine fanleaf virusMutation(s): 0 
Find proteins for P18474 (Grapevine fanleaf virus)
Go to UniProtKB:  P18474
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.193 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 408.000α = 90.00
b = 408.000β = 90.00
c = 408.000γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
PHENIXrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-08
    Type: Initial release
  • Version 1.1: 2011-12-28
    Type: Database references, Refinement description, Version format compliance
  • Version 1.2: 2014-10-22
    Type: Atomic model, Database references, Other
  • Version 1.3: 2019-03-06
    Type: Data collection, Experimental preparation, Other
  • Version 1.4: 2019-05-08
    Type: Data collection, Experimental preparation