Variation of DNA Concentration
Figure 4: Effects of DNA concentration on cell-free expression. Results were obtained for concentrations of 0.02 µg/µl, 0.04 µg/µl, 0.06 µg/µl, 0.08 µg/µl, 0.1 µg/µl and a negative control without DNA. Validation was performed via luciferase assay and analyzed in a microplate reader.
After establishing the ideal concentration of Mg(OAc)2 in our reactions, we further investigated the optimal concentration of DNA template for increased expression. Again, pBESTlucTM was expressed to allow the analysis via luciferase assay in a microplate reader. Triplicates for reactions of 50 µl volumes were set up with amounts of DNA ranging from 0.02 µg to 0.1 µg, as well as a negative control without DNA. A luciferase assay was performed as described in protocols (figure 4+5).