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. 1975 Jun;15(6):1302–1307. doi: 10.1128/jvi.15.6.1302-1307.1975

Characterization of T antigen in cells infected with a temperature-sensitive mutant of simian virus 40.

T Kuchino, N Yamaguchi
PMCID: PMC354596  PMID: 167188

Abstract

T antigen induced in African green monkey kidney cells by a temperature-sensitive mutant of simian virus 40, defective in a function required for cell transformation, was characterized. The number of T antigen-positive cells estimated by an immunofluorescent techniques was almost equal at permissive (32.5 C) and restrictive (38.5 C) temperatures, but was slightly reduced when the infected cells were incubated at a higher temperature (40.5 C). However, a complement fixation test indicated that the amount of T antigen induced by the mutant is not significantly different from that induced by wild-type virus at 40.5 C. These results suggest that the T antigen-inducing ability of the mutant is not defective. Two distinct molecular species of T antigen were induced by the mutant at the permissive temperature, whereas only one form was observed at the restrictive temperature. The larger molecular form (14 to 15S) induced by the mutant at the permissive temperature was more heat labile than that induced by wild-type virus, suggesting that the mutated gene product is a component of the larger molecular form.

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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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