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  • Title: [Genetic study of plasmid integration into yeast chromosomes. IV. Integration of the plasmid pYF91 into different yeast chromosomes].
    Author: Iarovoĭ BF, Stepanova VP, Bulat SA, Mezhevaia EV, Zakharov IA.
    Journal: Genetika; 1987 Mar; 23(3):431-9. PubMed ID: 3552880.
    Abstract:
    Integration of the episomic chimeric plasmid pYF91 into yeast chromosomes has been studied. Plasmid insertion into the chromosomes was observed to occur with the frequency of 4 X 10(-8). 379 integrants were selected from the highly unstable (cir0) transformants. The fact of plasmid integration into particular chromosomes was confirmed for 318 integrants. Genetic analysis showed that the plasmid can integrate into the region of LEU2 gene or into another arm of chromosome III (227 integrants), and also into other chromosomes: I, II, IV, V, VI, VII, VIII, IX, XII, XV (91 integrants). It is suggested that integration is the result of recombination between yeast chromosomes and homologous plasmid regions carrying LEU2 gene or Ty element and "delta" sequence.
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