Expression, antigenicity and studies on cell receptor binding of the hemagglutinin of infectious salmon anemia virus

Expression, antigenicity and studies on cell receptor binding of the hemagglutinin of infectious... Infectious salmon anemia (ISA) virus belongs to the proposed genus Isavirus of Orthomyxoviridae and is an emerging pathogen in Atlantic salmon ( Salmo salar ) farming. The hemagglutinin-esterase (HE) of ISA virus share several characteristics with the influenza virus hemagglutinin. This study reports recombinant expression of different ISA virus HE mutants in fish cell lines. Some introduced mutations, representing minimal differences in single amino acid residues, resulted in remarkable effects on expression efficiency in general and on surface expression specifically. Receptor binding assays showed that amino acid residues in the N-terminal half part are important in receptor binding, either being directly involved in the binding, or by influencing the structure of the binding site. Deletion of the putative N-glycosylation sites of the ISA virus HE, located near the transmembrane region, did not influence expression, receptor binding properties or staining by either a neutralising MAb, or salmon convalescent sera. The humoral immune response of Atlantic salmon after ISA virus infection showed weak neutralising activity and the results indicated that it was directed against HE. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Expression, antigenicity and studies on cell receptor binding of the hemagglutinin of infectious salmon anemia virus

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer-Verlag/Wien
Subject
Biomedicine; Medical Microbiology; Virology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-005-0502-4
Publisher site
See Article on Publisher Site

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