Design and Synthesis of a Novel Cationic Peptide with Potent and Broad-Spectrum Antimicrobial Activity

Figure 3

Scanning electron micrographs of E. coli treated with KW-13. E. coli in mid-logarithmic growth was incubated with antibacterial peptide KW-13 for 2.5 h. (a) Untreated E. coli showing a normal intact cell surface. Scale bar is 3 μm. (b) Treated with 256 μg/mL KW-13 for 2.5 h, the E. coli cell membranes were disrupted. Scale bar is 3 μm. (c) The amplification of (b) in different visual field. Scale bar is 1 μm.