Abstract
The dominant kanr marker gene plays an important role in gene disruption experiments in budding yeast, as this marker can be used in a variety of yeast strains lacking the conventional yeast markers. We have developed a loxP-kanMX-loxP gene disruption cassette, which combines the advantages of the heterologous kanr marker with those from the Cre-lox P recombination system. This disruption cassette integrates with high efficiency via homologous integration at the correct genomic locus (routinely 70%). Upon expression of the Cre recombinase the kanMX module is excised by an efficient recombination between the loxP sites, leaving behind a single loxP site at the chromosomal locus. This system allows repeated use of the kanr marker gene and will be of great advantage for the functional analysis of gene families.
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Selected References
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