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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Antigenic variation in the influenza A virus nonstructural protein, NS1.

The antigenic structure of the nonstructural (NS1) protein encoded by influenza type A virus was examined using monoclonal antibodies prepared against purified NS1 inclusions isolated from the cytoplasm of infected cells. Topographical analysis by competitive radioimmunoassay indicated that three different overlapping antigenic regions were present on the NS1 of A/ WSN/33 (H1N1). Immunoprecipitation studies using infected cell lysates showed that antigenic determinants on A/ WSN/33 NS1 are common to NS1 proteins encoded by a wide range of viruses of human, swine, equine, and avian origin. Several avian strains, however, were found to encode antigenically variant NS1 proteins which had either extensive changes in one or more antigenic regions or small changes in epitopes within a region suggestive of antigenic drift. There was no correlation between surface antigen subtype and the antigenic profile of the NS1 protein. The antigenic relationships of NS1 proteins shown in this study are in agreement with the available sequence data.[1]

References

  1. Antigenic variation in the influenza A virus nonstructural protein, NS1. Brown, L.E., Hinshaw, V.S., Webster, R.G. Virology (1983) [Pubmed]
 
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