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This study evaluates the impact of various Gal4 DNA-binding domain (DBD) constructs on β-Galactosidase activity and relative luciferase expression in yeast and BHK21 cells. We analyze the incubation periods and concentrations, including 0.5 to 1μg of Gal4 DBD fused to luciferase, alongside immunocytodetection techniques. The findings reveal how different Gal4 DBD variants influence gene expression, contributing to our understanding of transcriptional regulation in eukaryotic cells.
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TSP1 CT VWC IGFBP C N * * * * * * * * * * * * * * * * * * * * * * AVEGDNCVFDGVIYRSGEKFQPSCKFQCTCRDGQIGCVPRCQLDVLLPEPNCPAPRKVEVPGECCEKWICGPDEEDSLGGLTL 14 +/- - +++ 12 10 Time of incubation (hours) b-Galactosidase activity in yeast 8 Gal4 DBD-NH2 - - - - 0,5 1 2 4 6 Gal4 DBD-NH3 - - +/- - Gal4 DBD-NH4 Gal4 DBD-NH5 - - - - - - - - 4 2 Gal4 DBD-NH23 - + ++ +++ 0 Gal4 DBD-NH24 + ++ +++ +++ Gal4 DBD-NH25 - - - - Gal4 DBD-NH35 - - - - Gal4 DBD-NH45 - - - - 6HIS NH3 Gal4 DBD Luciferase 5 Gal4 DBD binding sequences in tandem TATA mini Promoter 12,90 Gal4DBD-NH3 9,77 Relative Luciferase activity 2,11 1,00 Immunocytodetection 1ug 100ng 500ng 1ug pFA NH3 NH2 NH3 NH4 NH5 A) CCN3 B) C) BHK21 cells