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. 1985 May;54(2):569–575. doi: 10.1128/jvi.54.2.569-575.1985

Mutations near the carboxyl terminus of the simian virus 40 large tumor antigen alter viral host range.

J M Pipas
PMCID: PMC254830  PMID: 2985819

Abstract

We report the characterization of three mutants of simian virus 40 with mutations that delete sequences near the 3' end of the gene encoding large tumor antigen (T antigen). Two of these mutants, dl1066 and dl1140, exhibit an altered viral host range. Wild-type simian virus 40 is capable of undergoing a complete productive infection on several types of established African green monkey kidney lines, including BSC40 and CV1P. dl1066 and dl1140 grow on BSC40 cells at 37 degrees C. However, both mutants fail to form plaques on BSC40 cells at 32 degrees C or on CV1P cells at any temperature. These mutants are capable of replicating viral DNA in the nonpermissive cell type, indicating a defect in an activity of T antigen not related to its replication function. Furthermore this defect can be complemented in trans by the wild type or by a variety of DNA replication-negative T antigen mutants, so long as they produce a normal carboxyl-terminal region of the molecule. Our data are consistent with the hypothesis that the C-terminal region of T antigen constitutes a functional domain. We propose that this domain encodes an activity that is required for simian virus 40 productive infection on the CV1P cell line, but not on BSC40.

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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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