Aurein Maculatin 1-palmitoyl-2-oleoylphosphatidylcholine Amphibian Proteins Antimicrobial Cationic Peptides Citropin Coarse-grain Computer Simulation Helicoidal peptides Lactobacilli Lipid Bilayers Lipid bilayers Models, Molecular Molecular Conformation Molecular Dynamics Simulation Molecular dynamics Phosphatidylcholines amphibian protein antimicrobial cationic peptide aurein 1.2 peptide chemistry computer simulation conformation lipid bilayer maculatin-1.1 protein, Litoria metabolism molecular dynamics molecular model phosphatidylcholine α helix antimicrobial peptides