Peptide Mix from Olivancillaria hiatula Interferes with Cell-to-Cell Communication in Pseudomonas aeruginosa

Figure 7

Protease inhibition. (a) Levels of tyrosine produced from casein digestion by proteases in cell-free supernatants of treated and untreated cultures of Pseudomonas aeruginosa. Treated cultures were prepared in the presence of sub-MIC doses of the peptide mix and standard drug, gentamicin. Each bar represents mean ± SD of tyrosine concentration in 3 independent experiments. (b) Percentage inhibition of protease expression in Pseudomonas aeruginosa in the presence of sub-MIC doses of the peptide mix and gentamicin. Percentage inhibitions were computed with respect to the control group. Each bar represents mean ± SD of triplicate experiments.

(a)

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