Saccharomyces cerevisiae Polymerase ζ Functions in Mitochondria

Abstract
The MtArg8 reversion assay, which measures point mutation in mtDNA, indicates that in budding yeast Saccharomyces cerevisiae, DNA polymerase ζ and Rev1 proteins participate in the mitochondrial DNA mutagenesis. Supporting this evidence, both polymerase ζ and Rev1p were found to be localized in the mitochondria. This is the first report demonstrating that the DNA polymerase ζ and Rev1 proteins function in the mitochondria.