2VF1

X-ray crystallographic structure of the picobirnavirus capsid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.273 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Picobirnavirus Crystal Structure Provides Functional Insights Into Virion Assembly and Cell Entry.

Duquerroy, S.Da Costa, B.Henry, C.Vigouroux, A.Libersou, S.Lepault, J.Navaza, J.Delmas, B.Rey, F.A.

(2009) Embo J. 28: 1655

  • DOI: 10.1038/emboj.2009.109

  • PubMed Abstract: 
  • Double-stranded (ds) RNA virus particles are organized around a central icosahedral core capsid made of 120 identical subunits. This core capsid is unable to invade cells from outside, and animal dsRNA viruses have acquired surrounding capsid layers ...

    Double-stranded (ds) RNA virus particles are organized around a central icosahedral core capsid made of 120 identical subunits. This core capsid is unable to invade cells from outside, and animal dsRNA viruses have acquired surrounding capsid layers that are used to deliver a transcriptionally active core particle across the membrane during cell entry. In contrast, dsRNA viruses infecting primitive eukaryotes have only a simple core capsid, and as a consequence are transmitted only vertically. Here, we report the 3.4 A X-ray structure of a picobirnavirus--an animal dsRNA virus associated with diarrhoea and gastroenteritis in humans. The structure shows a simple core capsid with a distinctive icosahedral arrangement, displaying 60 two-fold symmetric dimers of a coat protein (CP) with a new 3D-fold. We show that, as many non-enveloped animal viruses, CP undergoes an autoproteolytic cleavage, releasing a post-translationally modified peptide that remains associated with nucleic acid within the capsid. Our data also show that picobirnavirus particles are capable of disrupting biological membranes in vitro, indicating that its simple 120-subunits capsid has evolved animal cell invasion properties.


    Organizational Affiliation

    Institut Pasteur, Unité de Virologie Structurale, Virology Department, CNRS URA 3015, Paris, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CAPSID PROTEIN
A, B
525Rabbit picobirnavirusN/A
Find proteins for Q9Q1V2 (Rabbit picobirnavirus)
Go to UniProtKB:  Q9Q1V2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.4 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.273 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 407.424α = 90.00
b = 407.424β = 90.00
c = 808.628γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
AMoREphasing
SCALAdata scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-16
    Type: Initial release
  • Version 1.1: 2011-07-07
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance