Published in:
01-05-2010 | Brief Report
Protein kinase C-dependent phosphorylation of Borna disease virus P protein is required for efficient viral spread
Authors:
Sonja Schmid, Philippe Metz, Christine M. A. Prat, Daniel Gonzalez-Dunia, Martin Schwemmle
Published in:
Archives of Virology
|
Issue 5/2010
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Abstract
Mutational analysis of the phosphate acceptor sites of the Borna disease virus (BDV) phosphoprotein (P) has suggested a role of phosphorylation for viral spread. However, the studied mutant viruses also had two amino acid exchanges in the X protein, because the reading frames of P and X overlap. To determine the relative contribution of P and X to viral attenuation, we studied a P variant with serine-to-leucine substitutions (PS26L,S28L) in which the wild-type X sequence was conserved. Viral spread of rBDV-PS26L,S28L was impaired in human oligodendroglioma cells and in adult rats. Thus, BDV-P phosphorylation contributes to efficient viral dissemination.