A baculovirus encoded 16-kDa glycoprotein localizes near the nuclear membrane of infected cells
1993
Gross, C.H. | Wolgamot, G.M. | Russell, R.L.Q. | Pearson, M.N. | Rohrmann, G.F.
An open reading frame (ORF 2) located upstream of the polyhedron envelope protein gene of Orgyia pseudotsugata multicapsid nuclear polyhedrosis virus (OpMNPV) was cloned in frame into a trpE expression vector. The fusion protein produced by this construct was used for the production of a monospecific antiserum. Western blot analysis of OpMNPV-infected Lymantria dispar cells detected a 16-kDa protein at 24 hr postinfection. The 16-kDa protein was determined to be N-glycosylated by tunicamycin treatment of infected cells. Immunofluorescence microscopy localized the 16-kDa protein to foci of intense cytoplasmic staining near the nuclear membrane. Immunoelectron microscopy indicated that the 16-kDa protein is associated with lamellar-like structures peripheral to the nuclear membrane and with envelopes of virus that have budded into the cytoplasm. The 16-kDa protein was not associated with extracellular budded or polyhedron-derived virions.
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