Synthetic and Systems Biotechnology (Dec 2023)

Nobachelins, new siderophores from Nocardiopsis baichengensis protecting Caenorhabditis elegans from Pseudomonas aeruginosa infection

  • Haowen Zhao,
  • Yuhao Ren,
  • Feng Xie,
  • Huanqin Dai,
  • Hongwei Liu,
  • Chengzhang Fu,
  • Rolf Müller

Journal volume & issue
Vol. 8, no. 4
pp. 640 – 646

Abstract

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The biosynthetic potential of actinobacteria to produce novel natural products is still regarded as immense. In this paper, we correlated a cryptic biosynthetic gene cluster to chemical molecules by genome mining and chemical analyses, leading to the discovery of a new group of catecholate-hydroxamate siderophores, nobachelins, from Nocardiopsis baichengensis DSM 44845. Nobachelin biosynthesis genes are conserved in several bacteria from the family Nocardiopsidaceae. Structurally, nobachelins feature fatty-acylated hydroxy-ornithine and a rare chlorinated catecholate group. Intriguingly, nobachelins rescued Caenorhabditis elegans from Pseudomonas aeruginosa-mediated killing.

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