Antibiotic activity of Emerimicin IV isolated from Emericellopsis minima from Talcahuano Bay, Chile
- PMID: 28669240
- DOI: 10.1080/14786419.2017.1344655
Antibiotic activity of Emerimicin IV isolated from Emericellopsis minima from Talcahuano Bay, Chile
Abstract
Due to the increasing emergence of resistance of bacterial pathogens to current antibiotics, we have examined the marine fungi present in sea sediments obtained 200 m offshore to discover new antibacterial compounds active against multidrug-resistant bacteria. One strain, identified as Emericellopsis minima, was isolated from sediments of Talcahuano Bay (Chile). From the liquid culture of E. minima, we isolated Emerimicin IV, a unique fungal peptaibol that exhibited antibacterial activity. The structure of this compound was assigned by interpretation of 1H NMR and HR-LCMS data. Emerimicin IV showed bacteriostatic activity against clinical isolates of methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus faecalis with MIC values ranging between 100 and 12.5 μg/mL.
Keywords: Emericellopsis minima; Emerimicin IV; Marine-derived fungi; antibacterial activity; multidrug-resistant bacteria.
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