Functional analysis of two baculovirus envelope proteins

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Yu, Ian-Ling
University of Lethbridge. Faculty of Arts and Science
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Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2008
Budded virions of AcMNPV can enter a variety of non-host cells, a characteristic likely due to the presence of GP64, an envelope protein found on a small subset of baculoviruses. Results show that AcMNPV's tropism for vertebrate cells can be restricted - a prerequisite for using AcMNPV for targeted in vivo gene delivery - by replacing the gp64 gene with SeF from SeMNPV. Unlike the relatively well characterized GP64 protein, the significance and function of the F homolog (Ac23, a pathogenicity factor), is poorly understood. How Ac23 might contribute to the faster speed of kill was examined by comparing occlusion bodies and occlusion-derived virions (ODV) of Ac23null mutant viruses with control viruses at the ultrastructural level. The results show that Ac23null mutant produces a significantly higher percentage of ODVs with single or lower number of nucleocapsids than controls, suggesting Ac23 may play a role in multicapsid envelopment of ODVs.
xiii, 101 leaves : ill. (some col.) ; 28 cm. --
Dissertations, Academic , Gene expression , Proteins -- Research , Baculoviruses -- Genetics