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. 1981 Aug;39(2):490–496. doi: 10.1128/jvi.39.2.490-496.1981

Molecular biology of rotaviruses. I. Characterization of basic growth parameters and pattern of macromolecular synthesis.

M A McCrae, G P Faulkner-Valle
PMCID: PMC171359  PMID: 6268838

Abstract

The United Kingdom tissue-adapted bovine rotavirus growing in African green monkey kidney (BSC-1) cells was selected as a model system with which to study the detailed molecular virology of rotavirus replication. Study of the kinetics of infectious virus production revealed a fairly rapid replication cycle, with maximum yield of virus after 10 to 12 h at 37 degrees C. Progeny genome synthesis was first detected during the virus latent period at 2 to 3 h postinfection. Study of the kinetics of viral polypeptide synthesis showed that virus rapidly inhibited cellular polypeptide synthesis such that by 4 h postinfection, only virus-induced polypeptides, 15 of which were detected, were being synthesized. No qualitative changes in the pattern of viral polypeptide synthesis were observed during infection, although, based on kinetic synthesis, three quantitative classes of polypeptides were defined. Pulse-chase analysis revealed three post-translational changes in viral proteins, two of which were shown to be due to glycosylation. Tunicamycin inhibition studies were used to identify the putative non-glycosylated precursors of the two glycoproteins. Comparison of the infected-cell polypeptides with those present in purified virions revealed that mot of the virus-induced proteins were incorporated into virions, with only VP9 being a truly nonstructural protein. Some localization of the various polypeptides within the purified virion was achieved by producing viral cores.

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Selected References

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