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J Virol. 1972 May; 9(5): 758-765
Copyright © 1972 American Society for Microbiology. All Rights Reserved.

Pattern of Protein Synthesis in Monkey Cells Infected by Simian Virus 40

¹ Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724

ABSTRACT

After infection of several permanent monkey cell lines by simian virus 40 (SV40), four additional protein bands can be detected by simple sodium dodecyl sulfate-polyacrylamide gel electrophoresis of whole-cell extracts. These bands appear only after the onset of viral deoxyribonucleic acid (DNA) synthesis, and inhibitors of DNA synthesis prevent their appearance. Three of them correspond to three previously identified capsid components, VP1, VP2, and VP3. The fourth protein band, which does not correspond to a previously identified virion component, is induced by SV40 infection of CV-1 and BSC-1 cultures but not by infection of MA-134 cultures.