Discovery of cationic nonribosomal peptides as Gram-negative antibiotics through global genome mining

Abstract

Microbial genomes encode enzymes for biosynthesis of many uncharacterized peptides. Here, the authors screen over 7,300 bacterial genomes for potential biosynthesis of cationic non-ribosomal peptides, and identify two novel peptides with activities against antibiotic-resistant Gram-negative pathogens.