4IV1

Crystal structure of recombinant foot-and-mouth-disease virus A22 empty capsid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Rational engineering of recombinant picornavirus capsids to produce safe, protective vaccine antigen.

Porta, C.Kotecha, A.Burman, A.Jackson, T.Ren, J.Loureiro, S.Jones, I.M.Fry, E.E.Stuart, D.I.Charleston, B.

(2013) Plos Pathog. 9: e1003255-e1003255

  • DOI: 10.1371/journal.ppat.1003255
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Foot-and-mouth disease remains a major plague of livestock and outbreaks are often economically catastrophic. Current inactivated virus vaccines require expensive high containment facilities for their production and maintenance of a cold-chain for th ...

    Foot-and-mouth disease remains a major plague of livestock and outbreaks are often economically catastrophic. Current inactivated virus vaccines require expensive high containment facilities for their production and maintenance of a cold-chain for their activity. We have addressed both of these major drawbacks. Firstly we have developed methods to efficiently express recombinant empty capsids. Expression constructs aimed at lowering the levels and activity of the viral protease required for the cleavage of the capsid protein precursor were used; this enabled the synthesis of empty A-serotype capsids in eukaryotic cells at levels potentially attractive to industry using both vaccinia virus and baculovirus driven expression. Secondly we have enhanced capsid stability by incorporating a rationally designed mutation, and shown by X-ray crystallography that stabilised and wild-type empty capsids have essentially the same structure as intact virus. Cattle vaccinated with recombinant capsids showed sustained virus neutralisation titres and protection from challenge 34 weeks after immunization. This approach to vaccine antigen production has several potential advantages over current technologies by reducing production costs, eliminating the risk of infectivity and enhancing the temperature stability of the product. Similar strategies that will optimize host cell viability during expression of a foreign toxic gene and/or improve capsid stability could allow the production of safe vaccines for other pathogenic picornaviruses of humans and animals.


    Organizational Affiliation

    The Pirbright Insitute, Pirbright, Woking, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP1
A
211Foot-and-mouth disease virus - type AMutation(s): 0 
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A)
Go to UniProtKB:  Q6PN23
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP2
B
218Foot-and-mouth disease virus - type AMutation(s): 0 
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A)
Go to UniProtKB:  Q6PN23
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP3
C
221Foot-and-mouth disease virus - type AMutation(s): 0 
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A)
Go to UniProtKB:  Q6PN23
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP4
D
85Foot-and-mouth disease virus - type AMutation(s): 0 
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A)
Go to UniProtKB:  Q6PN23
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.190 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 327.628α = 90.00
b = 341.374β = 90.00
c = 363.701γ = 90.00
Software Package:
Software NamePurpose
GDAdata collection
CNSrefinement
SCALEPACKdata scaling
CNSphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-04-17
    Type: Initial release