title: Positive and negative selection LYS5MX gene replacement cassettes for use in Saccharomyces cerevisiae.
abstract: Novel MX cassettes are described that contain the open reading frames (ORFs) of Saccharomyces cerevisiae or Candida albicans LYS5. The LYS5MX and CaLYS5MX cassettes, the targeting efficiencies of which are equivalent to those of other MX cassettes, are positively selected for Lys+ in a lys5 background. Unlike most of the other MX cassettes, the LYS5MX cassettes are also negatively selectable (alpha-aminoadipate-resistant), which will allow the use of the LYS5MX cassettes in plasmid shuffling and will also greatly facilitate marker recycling.
authors.affiliation: Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA.
authors.forename: Sayoko
authors.initials: S
authors.lastname: Ito-Harashima
authors.forename: John H
authors.initials: JH
authors.lastname: McCusker
mesh_terms: D002176:Candida albicans / Q000201:enzymology / Q000235:genetics; D003001:Cloning, Molecular; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics; D005656:Fungal Proteins / Q000737:chemistry / Q000235:genetics*; D005819:Genetic Markers; D016254:Mutagenesis, Insertional / Q000379:methods*; D016366:Open Reading Frames; D010957:Plasmids; D016133:Polymerase Chain Reaction; D012441:Saccharomyces cerevisiae / Q000201:enzymology / Q000235:genetics*; D012641:Selection, Genetic; D017855:Transferases (Other Substituted Phosphate Groups) / Q000737:chemistry / Q000235:genetics*
chemical_list: D004271:DNA, Fungal; D005656:Fungal Proteins; D005819:Genetic Markers; D017855:Transferases (Other Substituted Phosphate Groups); C021364:holo-(acyl-carrier-protein) synthase