Fig. 5. Membrane permeabilization of Saccharomyces cerevisiae. The influx of propidium iodide (PI) across impaired membranes into cells was detected by an increase in PI fluorescence several seconds after the addition of compound 2 but not compound 1. Green lines represent two sets of experiments; black line and red line represent the negative (buffer solution) and the positive control (melittin), respectively.
