Reference: Strich R, et al. (1986) Mutations in ARS1 increase the rate of simple loss of plasmids in Saccharomyces cerevisiae. Yeast 2(3):169-78

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Abstract


Autonomously replicating sequence (ARS) elements are DNA sequences that promote extrachromosomal maintenance of plasmids in yeast. Mutations generated in vitro in the ARS1 region were examined for their effect on plasmid maintenance in a yeast centromeric plasmid. Our data show that mutations in the regions surrounding the ARS1 consensus sequence cause increases in the frequency of simple loss (1:0) events without affecting the rate of nondisjunction (2:0). Removal of the consensus sequence itself causes a drastic increase in the rate of simple loss. Sequences sensitive to mutagenesis were identified in each flanking region and differ with respect to their location and importance to ARS function. These results suggest that the role ARS1 plays in plasmid maintenance deals with the replication and/or localization of the plasmid in yeast.

Reference Type
Journal Article
Authors
Strich R, Woontner M, Scott JF
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