Team:Michigan/Results

MSBT 2017

Results

Experiment #1: How do different promoters in pThermolyze affect cell growth at 37C and 25C?

We performed this experiment three times, but it proved difficult to ensure all cultures began at 0.2-0.4 OD, so for our analysis, we discarded the data for all trial runs that did not start with a time 0 OD of 0.2-0.4. If we had not done this, we would be comparing cultures that were at very different stages of growth. The remaining data are shown in the table below. Unfortunately, this method of pruning the data for consistency meant that we did not have any valid trials for promoter J grown at 37C and only one trial for that promoter at 25C, so we have excluded promoter J from our analysis. As the weakest of the three promoters that we tested, it is unlikely that its exclusion impacts the results. We see no consistent drop in OD at any time point once the cultures with our killswitch and promoters were switched to incubating at 25C. Such a drop would have indicated our killswitch was lysing cells as we had hoped.