Induction of Ty recombination in yeast by cDNA and transcription: Role of the RAD1 and RAD52 genes

Yael Nevo-Caspi, Martin Kupiec*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In the yeast Saccharomyces cerevisiae ectopic recombination has been shown to occur at high frequencies for artificially created repeats, but at relatively low frequencies for a natural family of repeated sequences, the Ty family. Little is known about the mechanism(s) that prevent recombination between repeated sequences. We have previously shown that nonreciprocal recombination (gene conversion) of a genetically marked Ty can be induced either by the presence of high levels of Ty cDNA or by transcription of the marked Ty from a GALI promoter. These two kinds of induction act in a synergistic manner. To further characterize these two kinds of Ty recombination, we have investigated the role played by the RAD52 and RAD1 genes. We have found that the RAD52 and RAD1 gene products are essential to carry out transcription-induced Ty conversion whereas cDNA-mediated conversion can take place in their absence.

Original languageEnglish
Pages (from-to)947-955
Number of pages9
JournalGenetics
Volume144
Issue number3
StatePublished - 1996

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