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  • Title: Expression of the full-length products of the human papillomavirus type 6b (HPV-6b) and HPV-11 L2 open reading frames by recombinant baculovirus, and antigenic comparisons with HPV-11 whole virus particles.
    Author: Rose RC, Bonnez W, Strike DG, Reichman RC.
    Journal: J Gen Virol; 1990 Nov; 71 ( Pt 11)():2725-9. PubMed ID: 2174962.
    Abstract:
    The L2 open reading frames (ORFs) of human papillomavirus (HPV) types 6b and 11 were expressed as full-length non-fusion proteins in Spodoptera frugiperda (Sf-9) cells using recombinant baculovirus. Both proteins were detected on Western blots as immunoreactive bands which migrated with apparent Mrs of 76K and 78K, respectively, and contained both cross-reactive and type-specific epitopes, as determined by polyclonal antisera directed against defined subregions of the HPV-6b and HPV-11 L2 ORFs. In addition, the minor capsid protein of HPV-11 particles co-migrates with the HPV-11 L2 ORF product and is immunoreactive with HPV-11 L2-specific antisera. These observations indicate that the anomalous electrophoretic mobilities of papillomavirus L2 ORF proteins can be explained without invoking post-transcriptional processing events and that the minor capsid protein of HPV-11 is antigenically and biophysically related to the HPV-11 L2 ORF product.
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