Reference: Benfato MS, et al. (1992) The DNA repair gene PSO3 of Saccharomyces cerevisiae belongs to the RAD3 epistasis group. Curr Genet 21(1):85-90

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Abstract


The mutant allele pso3-1 of Saccharomyces cerevisiae confers sensitivity to treatment with UV365nm (UVA) light-activated mono- and bi-functional psoralens. When pso3-1 is combined in double mutants with selected rad and pso mutant alleles and subjected to 8-MOP + UVA treatment, epistatic interaction with regard to survival is observed with pso1, pso2, and rad3. With the same treatment the combination of pso3-1 with rad6 and rad52 leads to synergistic interaction. For the monofunctional agent 3-carbethoxypsoralen (3-CPs) the analysis of double mutants yields the same results as with the bifunctional 8-methoxypsoralen (8-MOP) with the exception of the pso1-1pso3-1 double mutant. Here we find an additive interaction, i.e., the sensitivities of both parental strains are summed in the double mutant, which indicates a different substrate specificity of the repair activity encoded by the PSO1 and PSO3 genes.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Benfato MS, Brendel M, Henriques JA
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