Systematic collections of single-gene deletions have been invaluable in uncovering determinants of lifespan in yeast. Overexpression of a single gene does not have such a clear outcome as cancellation of its function but it can lead to a variety of imbalances, deregulations and compensations, and some of them could be important for longevity. We report an experiment in which a genome-wide collection of strains overexpressing a single gene was assayed for chronological lifespan (CLS).
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View Article and Find Full Text PDFLoss of heterozygosity (LOH) in a vegetatively growing diploid cell signals irregularity of mitosis. Therefore, assays of LOH serve to discover pathways critical for proper replication and segregation of chromosomes. We screened for enhanced LOH in a whole-genome collection of diploid yeast strains in which a single gene was strongly overexpressed.
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