FIG 2.
Comparison of in vitro bactericidal activities of peptides. Bacteria were treated with 50 μg/ml of each peptide for 2 h at 22 to 25°C. Serial dilutions were plated for CFU counting. (A) The bactericidal activities of P307 and its variants P307AE-8 and P307SQ-8C against A. baumannii strains 1791, S5, and ATCC 17978. (B) The activities of P307, P307SQ-8C, and equimolar SQSRESQC peptide with or without P307 against strains 1791 and S5. (C) The activities of P307SQ-8C and a scramble variant P307CS-8 against strains 1791, S5, and ATCC 17978. The error bars show the standard deviations, and the black horizontal lines mark the limit of detection.