Targeted Isolation of Saalfelduracin B-D from Amycolatopsis saalfeldensis Using LC-MS/MS-Based Molecular Networking

J Nat Prod. 2021 Apr 23;84(4):1002-1011. doi: 10.1021/acs.jnatprod.0c01027. Epub 2021 Mar 8.

Abstract

High-resolution tandem mass spectrometry (HR-MS2)-based metabolomic studies of Amycolatopsis saalfeldensis, isolated from the "Saalfelder Feengrotten" caves in Germany, led to the isolation of three ribosomally synthesized and post-translationally modified type II thiopeptides, saalfelduracin B-D (1-3) and the known saalfelduracin A (4). The structures of all four compounds were determined by comparative two-dimensional NMR analysis and high-resolution tandem mass spectrometry.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amycolatopsis / chemistry
  • Anti-Infective Agents / isolation & purification
  • Anti-Infective Agents / pharmacology*
  • Antibiosis
  • Biological Products / isolation & purification
  • Biological Products / pharmacology
  • Caves / microbiology*
  • Chromatography, High Pressure Liquid
  • Coculture Techniques
  • Germany
  • Metabolomics
  • Microbial Sensitivity Tests
  • Molecular Structure
  • Peptides / isolation & purification
  • Peptides / pharmacology*
  • Tandem Mass Spectrometry

Substances

  • Anti-Infective Agents
  • Biological Products
  • Peptides

Supplementary concepts

  • Amycolatopsis saalfeldensis