title: Dominant marker vectors for selecting yeast mating products.
abstract: We have developed plasmid vectors to enable selection of diploids from mating reactions between haploid strains that lack compatible recessive genetic markers. The plasmids bear one of five different dominant selectable markers, kanMX4, hphMX4, natMX4, patMX3 or ZEO, a yeast origin of replication, and the URA3 gene. Diploids can be selected from mating reactions between haploids transformed with plasmids expressing different dominant markers, by using a combination of drugs that select for both markers. Following non-selective growth, diploids that subsequently become cured of the plasmids can be directly selected on 5-FOA, for ura3 auxotrophs, or identified by replica-plating onto appropriate selective media.
authors.affiliation: Department of Biochemistry and Molecular Biology, Molecular Epigenetics, Life Sciences Center, University of British Columbia, Vancouver, BC, Canada. sadowski@interchange.ubc.ca
authors.forename: Ivan
authors.initials: I
authors.lastname: Sadowski
authors.forename: Pedro
authors.initials: P
authors.lastname: Lourenco
authors.forename: Jennifer
authors.initials: J
authors.lastname: Parent
mesh_terms: D004171:Diploidy; D025141:Drug Resistance, Fungal / Q000235:genetics; D005819:Genetic Markers / Q000235:genetics; D005822:Genetic Vectors / Q000235:genetics*; D010957:Plasmids / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000235:genetics* / Q000254:growth & development; D014170:Transformation, Genetic / Q000235:genetics
chemical_list: D005819:Genetic Markers