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Regulation of herpesvirus macro molecular synthesis part 6 synthesis and modification of viral poly peptides in enucleated cells


, : Regulation of herpesvirus macro molecular synthesis part 6 synthesis and modification of viral poly peptides in enucleated cells. Journal of Virology 22(3): 720-725

Cells [African green monkey kidney Vero] were enucleated with cytochalasin B after infection with herpes simplex virus 1. When protein synthesis was blocked by cycloheximide from the time of infection, mRNA for viral .alpha.-infected cell polypeptides (ICP) 4, 0 and 27 accumulated in the cytoplasm and was expressed after the removal of both drug and nucleus. A host protein, ICP 22, whose synthesis is stimulated in intact cells, was not made, and viral protein ICP 4, which is normally modified to a form that migrates more slowly in polyacrylamide gels, was not modified in the absence of the nucleus. After enucleation at 2 h postinfection, a number of viral .beta. and .gamma. proteins continued to be made, starting at 20-25% of the normal rates and declining with a half-time of about 2 h. The synthesis of ICP 4 declined more rapidly, suggesting that it is switched off in the cytoplasm.

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Related references

Fenwick, M.; Roizman, B., 1977: Regulation of herpesvirus macromolecular synthesis. VI. Synthesis and modification of viral polypeptides in enucleated cells. Cells were enucleated with cytochalasin B after infection with herpes simplex virus 1. When protein synthesis was blocked by cycloheximide from the time of infection, mRNA for viral alpha-infected cell polypeptides (ICP) 4, 0, and 27 accumulated i...

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