Induction of Ty Recombination in Yeast by Cdna and Transcription: Role of the Rad1 and Rad52 Genes

AUTOR(ES)

Nevo-Caspi, Y.

RESUMO

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 GAL1 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.

Documentos Relacionados

• Different Types of Recombination Events Are Controlled by the Rad1 and Rad52 Genes of Saccharomyces Cerevisiae
• Multiple recombination pathways for sister chromatid exchange in Saccharomyces cerevisiae: role of RAD1 and the RAD52 epistasis group genes
• The role of recombination and RAD52 in mutation of chromosomal DNA transformed into yeast.
• Role of RAD52 Epistasis Group Genes in Homologous Recombination and Double-Strand Break Repair
• The Genetic Control of Direct-Repeat Recombination in Saccharomyces: The Effect of Rad52 and Rad1 on Mitotic Recombination at Gal10, a Transcriptionally Regulated Gene