Isolation and structure determination of a new lantibiotic cinnamycin B from Actinomadura atramentaria based on genome mining

J Ind Microbiol Biotechnol. 2016 Aug;43(8):1159-65. doi: 10.1007/s10295-016-1788-9. Epub 2016 Jun 2.

Abstract

New lantibiotic cinnamycin B was isolated from the extract of Actinomadura atramentaria NBRC 14695(T), based on genome mining and chemical investigation. The partial structure of cinnamycin B was established by 2D NMR experiments, which indicated that cinnamycin B had same methyl lanthionine bridging pattern with cinnamycin. The reduction with NaBH4-NiCl2 afforded the reduced cinnamycin B, and MS/MS experiment indicated the presence of hydroxy asparatic acid in the molecule. Cinnamycin B showed an antibacterial activity against Streptomyces antibioticus with dosage of 5 μg (0.5μL, 10 mg/mL solution) at spot-on-lawn testing method. The gene cluster of cinnamycin B on the genome of A. atramentaria was identified and discussed in comparison with that of cinnamycin.

Keywords: Actinomadura atramentaria NBRC 14695; Genome mining; Lantibiotic; MS/MS analysis; NMR spectrum.

MeSH terms

  • Actinomycetales / chemistry*
  • Actinomycetales / genetics
  • Actinomycetales / metabolism
  • Anti-Bacterial Agents / chemistry*
  • Anti-Bacterial Agents / isolation & purification
  • Anti-Bacterial Agents / metabolism
  • Anti-Bacterial Agents / pharmacology
  • Bacteriocins / biosynthesis
  • Bacteriocins / chemistry*
  • Bacteriocins / isolation & purification
  • Bacteriocins / metabolism
  • Bacteriocins / pharmacology
  • Data Mining
  • Genome, Bacterial
  • Genomics
  • Peptides, Cyclic / chemistry

Substances

  • Anti-Bacterial Agents
  • Bacteriocins
  • Peptides, Cyclic
  • cinnamycin B
  • cinnamycin