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Antigenic characterization of bovine ephemeral fever rhabdovirus G and GNS glycoproteins expressed from recombinant baculoviruses.

Abstract
Recombinant baculoviruses expressing the BEFV envelope glycoprotein G and non-structural glycoprotein G(NS) were constructed. The G protein expressed in insect cells was located on the cell surface and induced spontaneous cell fusion at mildly acidic pH. The expressed G protein reacted with MAbs to continuous and conformational neutralization sites (G1, G2, G3b and G4), but not to conformational site G3a. The expressed G(NS) protein was also located on the cell surface but did not exhibit fusogenic activity. The G(NS) protein reacted with polyclonal antiserum produced from vaccinia-virus-expressed recombinant G(NS) but did not react with G protein antibodies. A His(6)-tagged, soluble form of the G protein was expressed and purified by Ni(2+)-NTA chromatography. The purified G protein reacted with BEFV-neutralizing MAbs to all continuous and conformational antigenic sites. The highly protective characteristics of the native BEFV G protein suggest that the secreted, baculovirus-expressed product may be a useful vaccine antigen.
AuthorsJasjit Johal, Karryn Gresty, Kritaya Kongsuwan, Peter J Walker
JournalArchives of virology (Arch Virol) Vol. 153 Issue 9 Pg. 1657-65 ( 2008) ISSN: 0304-8608 [Print] Austria
PMID18626567 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Antigens, Viral
  • Glycoproteins
  • Recombinant Proteins
  • Viral Envelope Proteins
  • Viral Nonstructural Proteins
Topics
  • Amino Acid Sequence
  • Animals
  • Antigens, Viral (chemistry, genetics, immunology, isolation & purification)
  • Baculoviridae (genetics, metabolism)
  • Cattle
  • Cell Line
  • Ephemeral Fever (immunology, virology)
  • Ephemeral Fever Virus, Bovine (chemistry, genetics, immunology)
  • Gene Expression
  • Glycoproteins (chemistry, genetics, immunology, isolation & purification)
  • Molecular Sequence Data
  • Recombinant Proteins (chemistry, genetics, immunology, isolation & purification)
  • Sequence Alignment
  • Spodoptera
  • Viral Envelope Proteins (chemistry, genetics, immunology, isolation & purification)
  • Viral Nonstructural Proteins (chemistry, genetics, immunology, isolation & purification)

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