Abstract:
:Wild-type strains of Saccharomyces cerevisiae exhibit mitotic recombination between the chimeric plasmid TLC-1 and the endogenous 2mu circle that involves sequence homologies between the two plasmids that are not acted on by the 2mu circle site-specific recombination system. This generalized recombination can be detected because it separates the LEU2 and CAN1 markers of TLC-1 from each other through the formation of a plasmid containing only the S. cerevisiae LEU2 region and the 2mu circle. This derivative plasmid is maintained more stably during vegetative growth than TLC-1, and strains which carry it frequently lose the endogenous 2mu circle. Therefore, TLC-1 can provide a convenient selection for [cir0] cells. Formation of this new plasmid is greatly reduced, but not eliminated, in strains containing the rad52-1 mutation. This indicates that generalized mitotic recombination between plasmid sequences utilizes functions required for chromosomal recombination in S. cerevisiae.
journal_name
Mol Cell Bioljournal_title
Molecular and cellular biologyauthors
Whiteway MS,Ahmed Adoi
10.1128/mcb.4.1.195subject
Has Abstractpub_date
1984-01-01 00:00:00pages
195-8issue
1eissn
0270-7306issn
1098-5549journal_volume
4pub_type
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