Elevated incidence of loss of heterozygosity (LOH) in an sgs1 mutant of Saccharomyces cerevisiae: roles of yeast RecQ helicase in suppression of aneuploidy, interchromosomal rearrangement, and the simultaneous incidence of both events during mitotic growth.

Abstract excerpt

The SGS1 gene of Saccharomyces cerevisiae is a member of the RecQ helicase family, which includes the human BLM, WRN and RECQL4 genes responsible for Bloom and Werner's syndrome and Rothmund-Thomson syndrome, respectively. Cells defective in any of these genes exhibit a higher incidence of genome instability. We previously demonstrated that various genetic alterations were detectable as events leading to loss of...

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