Figure 2.
Structural classes of antimicrobial peptides; (A) mixed structure of Plectasin, a defensin-like molecule (PDB code 1ZFU) [44], (B) β-looped lactoferricin (PDB code 1LFC) [45], (C) α-helical human cathelicidin LL-37 (PDB code 2K6O) [46], (D) extended indolicidin (PDB code 1G89) [47]. The figures have been prepared with use of the graphic program MolMol 2K.1 [48].