A strong positive correlation
My time in Inuvik so far has consisted primarily of making figures. In order to stop procastinating, here's a blog post to show a satisfying result. (A "Where is Inuvik?" post will follow soon). Plotting Sxy abundance in cells growing in sBHI against transformation shows a positive correlation: as Sxy levels increase, cells become more competent.
This tells us that Sxy is limiting to competence development during gowth in rich medium, as is cAMP-CRP. In the figure, blue=KW20 and red=hypercompetent mutants, while filled circles are OD 0.2 and empty circles are OD 1.0. This plot includes our latest protein data - with this new data, the corellation between Sxy levels and transformation frequency is very strong (and satisfying).