Abstract
SIN3 gene product operates as a repressor for a huge amount of genes in Saccharomyces cerevisiae. Sin3 protein with a mass of about 175 kDa is a member of the RPD3 protein complex with an assessed mass of greater than 2 million Da. It was previously shown that RPD3 gene mutations influence recombination and repair processes in S. cerevisiae yeasts. We studied the impacts of the sin3 mutation on UV-light sensitivity and UV-induced mutagenesis in budding yeast cells. The deletion of the SIN3 gene causes weak UV-sensitivity of mutant budding cells as compared to the wild-type strain. These results show that the sin3 mutation decreases both spontaneous and UV-induced levels of levels. This fact is hypothetically related to the malfunction of ribonucleotide reductase activity regulation, which leads to a decrease in the dNTP pool and the inaccurate error-prone damage bypass postreplication repair pathway, which in turn provokes a reduction in the incidence of mutations.
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Original Russian Text © I.Yu. Lebovka, T.N. Kozhina, I.V. Fedorova, V.T. Peshekhonov, T.A. Evstyukhina, A.Yu. Chernenkov, V.G. Korolev, 2014, published in Genetika, 2014, Vol. 50, No. 1, pp. 5–11.
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Lebovka, I.Y., Kozhina, T.N., Fedorova, I.V. et al. Sin3 histone deacetylase controls level of spontaneous and UV-induced mutagenesis in yeast Saccharomyces cerevisiae . Russ J Genet 50, 1–6 (2014). https://doi.org/10.1134/S1022795413110124
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DOI: https://doi.org/10.1134/S1022795413110124

