Discovery of Six Ramoplanin Family Gene Clusters and the Lipoglycodepsipeptide Chersinamycin*.
Journal Article (Journal Article)
Ramoplanins and enduracidins are peptidoglycan lipid intermediate II-binding lipodepsipeptides with broad-spectrum activity against methicillin- and vancomycin-resistant Gram-positive pathogens. Targeted genome mining using probes from conserved sequences within the ramoplanin/enduracidin biosynthetic gene clusters (BGCs) was used to identify six microorganisms with BGCs predicted to produce unique lipodepsipeptide congeners of ramoplanin and enduracidin. Fermentation of Micromonospora chersina yielded a novel lipoglycodepsipeptide, called chersinamycin, which exhibited good antibiotic activity against Gram-positive bacteria (1-2 μg/mL) similar to the ramoplanins and enduracidins. The covalent structure of chersinamycin was determined by NMR spectroscopy and tandem mass spectrometry in conjunction with chemical degradation studies. These six new BGCs and isolation of a new antimicrobial peptide provide much-needed tools to investigate the fundamental aspects of lipodepsipeptide biosynthesis and to facilitate efforts to produce novel antibiotics capable of combating antibiotic-resistant infections.
Full Text
Duke Authors
Cited Authors
- Morgan, KT; Zheng, J; McCafferty, DG
Published Date
- January 2021
Published In
Volume / Issue
- 22 / 1
Start / End Page
- 176 - 185
PubMed ID
- 32805078
Electronic International Standard Serial Number (EISSN)
- 1439-7633
International Standard Serial Number (ISSN)
- 1439-4227
Digital Object Identifier (DOI)
- 10.1002/cbic.202000555
Language
- eng