Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 362855
Title The major envelope protein, GP(5), of a European porcine reproductive and respiratory syndrome virus contains a neutralization epitope in its N-terminal ectodomain
Author(s) Wissink, E.H.J.; Wijk, H.A.R. van; Kroese, M.V.; Weiland, E.; Meulenberg, J.J.M.; Rottier, P.J.M.; Rijn, P.A. van
Source Journal of General Virology 84 (2003). - ISSN 0022-1317 - p. 1535 - 1543.
Department(s) ID - Infectieziekten
CIDC - Division Virology
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) equine arteritis virus - dehydrogenase-elevating virus - syndrome prrs virus - monoclonal-antibodies - lelystad-virus - structural protein - glycoprotein g(l) - immune-response - north-american - signal peptide
Abstract A set of neutralizing monoclonal antibodies (mAbs) directed against the GP5 protein of European type porcine reproductive and respiratory syndrome virus (PRRSV) has been produced previously (Weiland et al., 1999). This set reacted with a plaque-purified virus (PPV) subpopulation of Dutch isolate Intervet-10 (I-10), but not with the European prototype PRRSV LV. In order to map the neutralization epitope in the GP5 protein of the PPV strain, the ORF5 nucleotide sequence of PPV was determined. When the amino acid sequence derived from this nucleotide sequence was compared with that of PRRSV LV, four amino acid differences were found. Using site-directed mutagenesis, we showed that a proline residue at position 24 of the GP5 sequence of the PPV strain enabled recognition by the neutralizing mAbs. Pepscan analysis demonstrated that the epitope recognized by the neutralizing mAbs stretched from residues 29 to 35. Surprisingly, the reactivity of the mAbs in the Pepscan system was independent of the presence of a proline in position 24. Moreover, residue 24 is located within the predicted signal peptide, implying that either the signal peptide is not cleaved or is cleaved due to the presence of Pro24 such that the epitope remains intact. Our results demonstrate the presence of a neutralization epitope in the N-terminal ectodomain of the GP5 protein of PRRSV and imply a role for the ectodomain of GP5 in the infection of PRRSV.
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