Identification of two independent neutralization domains on the VP4 trypsin cleavage products VP5* and VP8* of human rotavirus ST3.

Abstract:

:The antigenic structure of the VP4 protein of human rotavirus (HRV) strains Wa and ST3 was studied by using a panel of Wa- and ST3-derived VP4-specific neutralizing monoclonal antibodies (NMAbs) and NMAb-resistant variants. The VP4-coding genes from three Wa and three ST3 variants were sequenced. For Wa VP4, one homotypic and one heterotypic neutralization site, at amino acids 458 and 392, respectively, were identified. For ST3 VP4, three neutralization sites were found at amino acids 72, 217, and 385 that are either homotypic or associated with limited cross-reactivity. Cross-neutralization assays using several pairs of NMAbs and resistant variants showed that Wa VP4 has at least one large neutralization domain on its larger trypsin cleavage product, VP5*, consisting of several operationally related epitopes. VP4 of ST3 has at least two neutralization domains, one located on VP5* that is operationally related to the large neutralization domains on VP5* from HRVs Wa and KU, as well as an independent neutralization domain on VP8*, the smaller trypsin cleavage product of VP4.

journal_name

Virology

journal_title

Virology

authors

Padilla-Noriega L,Dunn SJ,López S,Greenberg HB,Arias CF

doi

10.1016/s0042-6822(95)80029-8

subject

Has Abstract

pub_date

1995-01-10 00:00:00

pages

148-54

issue

1

eissn

0042-6822

issn

1096-0341

pii

S0042-6822(95)80029-8

journal_volume

206

pub_type

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