Reference: Chatterjee N, et al. (2013) Role of polymerase η in mitochondrial mutagenesis of Saccharomyces cerevisiae. Biochem Biophys Res Commun 431(2):270-3

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Abstract


DNA polymerase η mostly catalyzes an error-free bypass of the most frequent UV lesions, pyrimidine dimers of the cyclobutane-type. In addition to its nuclear localization, we show here for the first time its mitochondrial localization in budding yeast. In mitochondria, this polymerase improves bypass replication fidelity opposite UV damage as shown in base pair substitution and frameshift assays. For base pair substitutions, polymerase η appears to be related in function and epistatic to DNA polymerase ζ which, however, plays the opposite role in the nucleus.

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Journal Article
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Chatterjee N, Pabla R, Siede W
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