Yeast Two-Hybrid

The first transformation work requires two yeast strains (both Mav203; Leu -, Trp -, His -), one containing the pDBLeuDa4 bait plasmid and the other containing the pDBLeu plasmid. 2 strains were transformed with pPC86DMID1 (Y) predator plasmid. Here, (Y) was referred to as full length positive control (MID 1), DBB strain (MID 1 DBB) and DCC strain (MID 1 DCC). The conversion process with two strains and three capture plasmid DNA resulted in 6 (2 × 3) transformation mixtures (Table 1).

The yeast two-hybrid (Y 2 H) process involves the isolation of yeast RNA and its conversion to a cDNA template. The cDNA was amplified using PCR and then the catch was ligated to the vector (Rapley, 2008). The purpose of this experiment was to monitor the interaction between bait and bait and compare the results with four plasmid preparations on an agarose gel. Yeast two-hybrids utilize proteins that bind to other proteins (Clark 2010). By using proteins with two domains, such as binding domains and activation domains, these domains can be engineered to provide signals corresponding to the leather rather than interact with one another (Clark 2010). For this project, the binding domain of Gal4p and its activation domain were engineered using the yeast GAL4 gene as a system for monitoring protein-protein interactions.

Yeast two-hybrid system was first established by Fields and Song et al. Studies on transcription regulation of eukaryotic genes The yeast galactosidase gene transcriptional activator GL4 has two independent domains: an N-terminal DNA binding domain (BD) and a C-terminal transcriptional activation domain (AD). BD binds to DNA molecules that activate the transcription of downstream genes, and only two are spatially close enough to activate transcription of downstream genes. The two proteins studied were then fused to BD and AD, respectively. When two proteins interact, AD and BD will be spatially close and will activate transcription of the downstream reporter gene.