Biosynthesis of Tetronates by a Nonribosomal Peptide Synthetase-Polyketide Synthase System

Org Lett. 2023 Mar 17;25(10):1628-1632. doi: 10.1021/acs.orglett.3c00103. Epub 2023 Mar 6.

Abstract

A cryptic tetronate biosynthetic pathway was identified in Kitasatospora niigatensis DSM 44781 via heterologous expression. Distinct from the currently known biosynthetic pathways, this system utilizes a partially functional nonribosomal peptide synthetase and a broadly selective polyketide synthase to direct the assembly and lactonization of the tetronate scaffold. By employing a permissive crotonyl-CoA reductase/carboxylase to provide different extender units, seven new tetronates (kitaniitetronins A-G) were obtained via precursor-directed biosynthesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biosynthetic Pathways
  • Peptide Synthases* / metabolism
  • Polyketide Synthases* / metabolism

Substances

  • Polyketide Synthases
  • non-ribosomal peptide synthase
  • Peptide Synthases