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  • Title: Combined transformation and genetic technique verification of protein-protein interactions in the yeast two-hybrid system.
    Author: Tyagi S, Lal SK.
    Journal: Biochem Biophys Res Commun; 2000 Nov 02; 277(3):589-93. PubMed ID: 11061998.
    Abstract:
    The yeast two-hybrid system is frequently used to identify protein-protein interactions. The assay is based on the functional reconstitution of a transcriptional activator. Since an indirect phenotype of the positive clones is the basis for selection of positive interacting clones, the two-hybrid screens are vulnerable to false positives. Here we report a screening protocol based on the sequential use of the cotransformation approach followed by the genetic method for verifying true two-hybrid interactions. Using this procedure, we have screened a cDNA library and have been able to isolate true positives from the yeast two-hybrid screen.
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