Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Icosahedral - I  (3D View)
Global Stoichiometry: Hetero 240-mer - A60B60C60D60 Pseudo Symmetry: Icosahedral - I  (3D View)
Pseudo Stoichiometry: Hetero 240-mer - A120B60C60 

Biological assembly 1 assigned by authors and generated by (software)

Macromolecule Content

• Total Structure Weight: 80.75 kDa 
• Atom Count: 5546 
• Modelled Residue Count: 664 
• Deposited Residue Count: 735 
• Unique protein chains: 4

4IV1

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

• PDB DOI: 10.2210/pdb4IV1/pdb

• Classification: VIRUS
• Organism(s): Foot-and-mouth disease virus A
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2013-01-22 Released: 2013-04-17 
• Deposition Author(s): Porta, C., Kotecha, A., Burman, A., Jackson, T., Ren, J., Loureiro, S., Jones, I.M., Fry, E.E., Stuart, D.I., Charleston, B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.193 
• R-Value Work: 0.190 
• R-Value Observed: 0.190 

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

• PubMed: 23544011 
• DOI: 10.1371/journal.ppat.1003255
• Primary Citation of Related Structures:  
  4IV1, 4IV3


• 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 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.

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Organizational Affiliation: 

The Pirbright Insitute, Pirbright, Woking, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein VP1	A	211	Foot-and-mouth disease virus A	Mutation(s): 0  Gene Names: FMDV A22 EC: 2.7.7.48 (UniProt), 3.4.22.28 (UniProt), 3.4.22.46 (UniProt), 3.6.1.15 (UniProt)
UniProt
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A) Explore Q6PN23  Go to UniProtKB:  Q6PN23

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein VP2	B	218	Foot-and-mouth disease virus A	Mutation(s): 0  Gene Names: FMDV A22 EC: 2.7.7.48 (UniProt), 3.4.22.28 (UniProt), 3.4.22.46 (UniProt), 3.6.1.15 (UniProt)
UniProt
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A) Explore Q6PN23  Go to UniProtKB:  Q6PN23

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein VP3	C	221	Foot-and-mouth disease virus A	Mutation(s): 0  Gene Names: FMDV A22 EC: 2.7.7.48 (UniProt), 3.4.22.28 (UniProt), 3.4.22.46 (UniProt), 3.6.1.15 (UniProt)
UniProt
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A) Explore Q6PN23  Go to UniProtKB:  Q6PN23

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein VP4	D	85	Foot-and-mouth disease virus A	Mutation(s): 0  Gene Names: FMDV A22 EC: 2.7.7.48 (UniProt), 3.4.22.28 (UniProt), 3.4.22.46 (UniProt), 3.6.1.15 (UniProt)
UniProt
Find proteins for Q6PN23 (Foot-and-mouth disease virus - type A) Explore Q6PN23  Go to UniProtKB:  Q6PN23

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.193 
• R-Value Work: 0.190 
• R-Value Observed: 0.190 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 327.628	α = 90
b = 341.374	β = 90
c = 363.701	γ = 90

Software Package:

Software Name	Purpose
GDA	data collection
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-01-22 
• Released Date: 2013-04-17 
Deposition Author(s): Porta, C., Kotecha, A., Burman, A., Jackson, T., Ren, J., Loureiro, S., Jones, I.M., Fry, E.E., Stuart, D.I., Charleston, B.

Revision History  

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