Discovery of the Cyclic Lipopeptide Gacamide A by Genome Mining and Repair of the Defective GacA Regulator in Pseudomonas fluorescens Pf0-1

J Nat Prod. 2019 Feb 22;82(2):301-308. doi: 10.1021/acs.jnatprod.8b00747. Epub 2019 Jan 22.

Abstract

Genome mining of the Gram-negative bacterium Pseudomonas fluorescens Pf0-1 showed that the strain possesses a silent NRPS-based biosynthetic gene cluster encoding a new lipopeptide; its activation required the repair of the global regulator system. In this paper, we describe the genomics-driven discovery and characterization of the associated secondary metabolite gacamide A, a lipodepsipeptide that forms a new family of Pseudomonas lipopeptides. The compound has a moderate, narrow-spectrum antibiotic activity and facilitates bacterial surface motility.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Bacterial Proteins / genetics*
  • Drug Discovery*
  • Lipopeptides / genetics*
  • Lipopeptides / pharmacology
  • Multigene Family
  • Peptides, Cyclic / genetics*
  • Peptides, Cyclic / pharmacology
  • Pseudomonas fluorescens / genetics*

Substances

  • Bacterial Proteins
  • GacA protein, Bacteria
  • Lipopeptides
  • Peptides, Cyclic