Construction of Improved Yeast Two-Hybrid Libraries

The Yeast Two-Hybrid (Y2H) system is the most frequently used method for identifying protein–protein interactions. The use of recombination-amenable Y2H vectors would reduce time and effort for cloning prey or bait vectors, and increase the quality of Y2H screenings due to the production of improved screening libraries. These libraries can heighten the amount of new candidates in Y2H screenings significantly by representing more correct candidate genes in frame and outperform a classical Y2H library. The described vectors can be used for the construction of genomic, peptide, or cDNA-based Y2H libraries. Furthermore, the compatibility to newer ORFeome libraries is also given. Here, we describe a vector system for site-specific recombination and for the construction of high-content Y2H libraries. In summary, we will describe the construction of these vectors and the production of Y2H screening libraries.