1887

Abstract

SUMMARY

A defective-interfering (DI) particle of Sindbis virus was generated from a mutant of RNA complementation group A by serially undiluted passages at 30 °C. This mutant induced interferon at a permissive temperature (30 °C), but not at a non-permissive temperature (40.5 °C); it also expressed homotypic interference throughout the range 30 to 40.5 °C. This demonstrates for the first time in a DI particle a function, namely, the ability to induce interferon. In addition, our data provide further evidence that the RNA genome of a Sindbis DI particle can be translated within the cell. We postulate that the products of translation function to produce the putative inducer of interferon, namely a molecule of dsRNA.

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/content/journal/jgv/10.1099/0022-1317-48-2-391
1980-06-01
2022-09-25
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