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Flexible sequence-random polymers containing cationic and lipophilic subunits that act as functional mimics of host-defense peptides have recently been reported. We used bacteria and lipid vesicles to study one such polymer, having an average length of 21 residues, that is active against both Gram-positive and Gram-negative bacteria. At low concentrations, this polymer is able to permeabilize model...
Antimicrobial peptides encompass a wide variety of structural motifs. Many peptides have α-helical structures. The majority of these peptides are cationic and amphipathic but there are also hydrophobic α-helical peptides which possess antimicrobial activity. In addition, some β-sheet peptides have antimicrobial activity and even antimicrobial α-helical peptides which have been modified to possess...
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