“…The www.videleaf.com antimicrobial peptide (AMP) database (https://aps.unmc.edu) encompasses a large collection of natural AMPs (~3,000) [30]. Notably, only seven AMPs are clinically used: daptomycin (natural and synthetic cyclic lipopeptide, 13 amino acids, inhibition of bacterial growth), gramicidin S (natural cyclic peptide, 12 amino acids, membrane disruption, and depolarization) [63], colistin (natural cyclic peptide, 10 amino acids, membrane lysis) [64], oritavancin (nature-inspired lipoglycopeptide, 7 amino acids, membrane lysis and inhibition of cell wall synthesis) [65], dalbavancin (naturally-inspired lipoglycopeptide, 7 amino acids, inhibition of cell wall synthesis) [66], telavancin (nature-inspired, lipoglycopeptide, 7 amino acids, membrane lysis and inhibition of cell wall synthesis) [67], and vancomycin (natural, 7 amino acids, inhibition of cell wall synthesis) [68]. Colistin was first approved for acute and chronic Gram-negative bacterial infections, and despite its significant renal and neurologic toxicity, it remains the last resort treatment for some multi-drug resistant (MDR) species such as Pseudomonas aeruginosa and Acinetobacter spp.…”