Identification of a Key Amino Acid of LuxS Involved in AI-2 Production in Campylobacter jejuni
Figure 7
AI-2 and SRH levels of various cultures.
The first 6 columns depict the cell-free supernatent AI-2 concentrations of cultures as a reference for endogenous LuxS activity. The four columns labeled boiled are cell-free supernatent post-boiling which destroys AI-2 activity. Finally the last 4 columns show the AI-2 activity produced in the presence of exogenous rLuxS+ recombinant protein which provides a semi-quantitative measure of extracellular SRH levels.