2VF1

X-ray crystallographic structure of the picobirnavirus capsid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.273 
  • R-Value Observed: 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
  • Primary Citation of Related Structures:  
    2VF1

  • 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 that are used to deliver a transcriptionally active core particle across the membrane during cell entry ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CAPSID PROTEINA, B525Rabbit picobirnavirusMutation(s): 0 
UniProt
Find proteins for Q9Q1V2 (Rabbit picobirnavirus)
Explore Q9Q1V2 
Go to UniProtKB:  Q9Q1V2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.40 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.273 
  • R-Value Observed: 0.273 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 407.424α = 90
b = 407.424β = 90
c = 808.628γ = 120
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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