New natural products identified by combined genomics-metabolomics profiling of marine Streptomyces sp. MP131-18

Sci Rep. 2017 Feb 10:7:42382. doi: 10.1038/srep42382.

Abstract

Marine actinobacteria are drawing more and more attention as a promising source of new natural products. Here we report isolation, genome sequencing and metabolic profiling of new strain Streptomyces sp. MP131-18 isolated from marine sediment sample collected in the Trondheim Fjord, Norway. The 16S rRNA and multilocus phylogenetic analysis showed that MP131-18 belongs to the genus Streptomyces. The genome of MP131-18 isolate was sequenced, and 36 gene clusters involved in the biosynthesis of 18 different types of secondary metabolites were predicted using antiSMASH analysis. The combined genomics-metabolics profiling of the strain led to the identification of several new biologically active compounds. As a result, the family of bisindole pyrroles spiroindimicins was extended with two new members, spiroindimicins E and F. Furthermore, prediction of the biosynthetic pathway for unusual α-pyrone lagunapyrone isolated from MP131-18 resulted in foresight and identification of two new compounds of this family - lagunapyrones D and E. The diversity of identified and predicted compounds from Streptomyces sp. MP131-18 demonstrates that marine-derived actinomycetes are not only a promising source of new natural products, but also represent a valuable pool of genes for combinatorial biosynthesis of secondary metabolites.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / biosynthesis
  • Anti-Bacterial Agents / chemistry
  • Aquatic Organisms / genetics*
  • Aquatic Organisms / metabolism*
  • Biological Products / analysis*
  • Biosynthetic Pathways
  • Genome, Bacterial
  • Genomics*
  • Indoles / chemistry
  • Metabolomics*
  • Molecular Sequence Annotation
  • Multigene Family
  • Phylogeny
  • Pyrroles / chemistry
  • Secondary Metabolism / genetics
  • Streptomyces / genetics*
  • Streptomyces / metabolism*

Substances

  • Anti-Bacterial Agents
  • Biological Products
  • Indoles
  • Pyrroles
  • indole