Identification of an Anti-MRSA Cyclic Lipodepsipeptide, WBP-29479A1, by Genome Mining of Lysobacter antibioticus.

Lysobacter are ubiquitous in the environment but remain largely underexplored, although the bacteria are considered "peptide specialists". Here, we identified a new cyclic lipodepsipeptide, WBP-29479A1 (1), through genome mining of L. antibioticus ATCC 29479. 1 is biosynthesized by a large NRPS gene cluster, and its structure, including the six nonproteinogenic residues and 3-hydroxy fatty acid, was determined by extensive spectroscopic analyses and chemical derivatization. 1 exhibits potent anti-MRSA activity in a menaquinone-dependent manner.