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. 1972 Jan;9(1):1–9. doi: 10.1128/jvi.9.1.1-9.1972

Identification of Virus-Induced Proteins in Cells Productively Infected with Simian Virus 40

Hans Fischer 1, Gerhard Sauer 1
PMCID: PMC356255  PMID: 4333541

Abstract

The number and molecular weight of the structural polypeptides of highly purified simian virus 40 (SV40) were determined by polyacrylamide gel electrophoresis. Six different polypeptides were found, two of which (VP1 and VP2) comprise the bulk of the viral capsid proteins. The pattern of protein synthesis in productively infected CV-1 cells was studied by sodium dodecyl sulfate polyacrylamide gel electrophoresis. Identification of virus-induced proteins in the infected CV-1 cells was achieved in double-labeling experiments by electrophoresis with purified labeled SV40 capsid proteins. Four of these proteins (VP1 and VP4) could be classified as components of the virion because their synthesis occurred after the onset of viral deoxyribonucleic acid (DNA) replication and because they were inhibited by arabinofuranosylcytosine (ara-C). Appearance of two other virus-induced proteins was not prevented by ara-C; one of them did not comigrate in the electrophoresis with purified virion polypeptides, and both could be detected before the onset of viral DNA synthesis. These latter two proteins were classified on the basis of these criteria as nonvirion capsid proteins (NCVP1 and NCVP2).

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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