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. 1991 Jun;65(6):3213–3218. doi: 10.1128/jvi.65.6.3213-3218.1991

Serotype-specific epitope(s) present on the VP8 subunit of rotavirus VP4 protein.

G Larralde 1, B G Li 1, A Z Kapikian 1, M Gorziglia 1
PMCID: PMC240978  PMID: 1709699

Abstract

cDNA clones representing the VP8 and VP5 subunits of VP4 of symptomatic human rotavirus strain KU (VP7 serotype 1 and VP4 serotype 1A) or DS-1 (VP7 serotype 2 and VP4 serotype 1B) or asymptomatic human rotavirus strain 1076 (VP7 serotype 2 and VP4 serotype 2) were constructed and inserted into the pGEMEX-1 plasmid and expressed in Escherichia coli. Immunization of guinea pigs with the VP8 or VP5 protein of each strain induced antibodies that neutralized the rotavirus from which the VP4 subunits were derived. In a previous study (M. Gorziglia, G. Larralde, A.Z. Kapikian, and R. M. Chanock, Proc. Natl. Acad. Sci. USA 87:7155-7159, 1990), three distinct serotypes and one subtype of VP4 outer capsid protein were identified among 17 human rotavirus strains that had previously been assigned to five distinct VP7 serotypes. The results obtained by cross-immunoprecipitation and by neutralization assay with antisera to the VP8- and VP5-expressed proteins suggest that the VP8 subunit of VP4 contains the major antigenic site(s) responsible for serotype-specific neutralization of rotavirus via VP4, whereas the VP5 subunit of VP4 is responsible for much of the cross-reactivity observed among strains that belong to different VP4 serotypes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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