FIG. 1.

(A) Antibacterial activity of monomeric linear peptides L1 (columns in black), L4 (columns with dots), L5 (columns with cross-hatching), and L6 (columns in white). (B) Antibacterial activity of tetrabranched MAP4 form M1 (columns in black), M4 (columns with dots), M5 (columns with cross-hatching), and M6 (columns in white). Experiments were performed by incubating E. coli TG1 cells (8 × 10⁷ CFU/ml) with the indicated amounts of peptide. The survival percentage is the number of living colonies with respect to the number of colonies in controls without peptides.