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Genetics. 1994 Mar;136(3):849-56.

Efficient targeted integration at leu1-32 and ura4-294 in Schizosaccharomyces pombe.

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Johns Hopkins University School of Medicine, Department of Molecular Biology and Genetics, Baltimore, Maryland 21205.


Homologous integration into the fission yeast Schizosaccharomyces pombe has not been well characterized. In this study, we have examined integration of plasmids carrying the leu1+ and ura4+ genes into their chromosomal loci. Genomic DNA blot analysis demonstrated that the majority of transformants have one or more copies of the plasmid vector integrated via homologous recombination with a much smaller fraction of gene conversion to leu1+ or ura4+. Non-homologous recombination events were not observed for either gene. We describe the construction of generally useful leu1+ and ura4+ plasmids for targeted integration at the leu1-32 and ura4-294 loci of S. pombe.

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