Figure 2. Properties of phosphopyricin.
(a) Minimum inhibitory concentration of phosphopyricin against Staphylococcus aureus K1-7. (b) Activity of phosphopyricin against S. aureus K1-7 following exposure to 24 hours of light, as compared to dark and isopropanol (iso) controls. (c) Recovery of S. aureus K1-7 from culture exposed to either phosphopyricin (PP) or 9bWC2, relative to the antibiotic-free control. *p < 10−5; **p < 10−6. (d) Optical density of S. enterica incubated in the presence of either phosphopyricin with EDTA (PP + EDTA), EDTA alone (EDTA), phosphopyricin alone (PP), or with neither (culture control). Letters above error bars (s.d.) indicate statistically significantly different groups (p < 0.005). Cropped images in panel (b) were taken from the same plate for each respective time point. No image enhancements were made to these images (including brightness or contrast).