Figure 4

Comparison of the strength of charge and hydrophobic residue proportion among helical cathelicidins. A The antibacterial activity (MICs) of cathelicidins against P. aeruginosa (ATCC 27853) was divided into effective (< 45 μg/mL, red circle) and ineffective (> 40 μg/mL, blue circle) groups (Table 2 and Additional file 2). B The average charge and hydrophobic residue proportion for each group were calculated. as shown in the table at the bottom. Welch’s t-test was used for statistical analysis.