pYES2/CT, pYES3/CT, and pYC2/CT are 6.0 kb, 5.9 kb, and 4.6 kb vectors, respectively, designed for inducible expression of recombinant proteins in Saccharomyces cerevisiae. Features of the vectors allow purification and detection of expressed proteins 
   The vectors contain the following elements:
? Yeast GAL1 promoter for high level inducible protein expression in yeast by galactose and repression by glucose (Giniger et al., 1985; West et al., 1984)
? Multiple cloning site (MCS) with 8 or 9 unique sites (plus two BstX I sites) to facilitate in-frame cloning with the C-terminal peptide 
? C-terminal peptide encoding the V5 epitope and a polyhistidine (6xHis) tag for detection and purification of your recombinant fusion protein
? 2μ origin for episomal maintenance and high copy replication (pYES2/CT and pYES3/CT) or CEN6/ARSH4 sequence for non-integrative centromeric maintenance and low copy replication (pYC2/CT)
? URA3 or TRP1 auxotrophic marker for selection of yeast transformants
? Ampicillin resistance gene for selection in E. coli