Revisiting the Enniatins: A Review of Their Isolation, Biosynthesis, Structure Determination and Biological Activities

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Nicholas Oberlies, Patricia A. Sullivan Distinguished Professor of Chemistry (Creator)
Cedric J Pearce, Adjunct Professor (Creator)
The University of North Carolina at Greensboro (UNCG )
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Abstract: Enniatins are cyclohexadepsipeptides isolated largely from Fusariumspecies of fungi, although they have been isolated from other genera, such as Verticillium and Halosarpheia. They were first described over 60 years ago, and their range of biological activities, including antiinsectan, antifungal, antibiotic and cytotoxic, drives contemporary interest. To date, 29 enniatins have been isolated and characterized, either as a single compound or mixtures of inseparable homologs. Structurally, these depsipeptides are biosynthesized by a multifunctional enzyme, termed enniatin synthetase, and are composed of six residues that alternate between N-methyl amino acids and hydroxy acids. Their structure elucidation can be challenging, particularly for enniatins isolated as inseparable homologs; however, several strategies and tools have been utilized to solve these problems. Currently, there is one drug that has been developed from a mixture of enniatins, fusafungine, which is used as a topical treatment of upper respiratory tract infections by oral and/or nasal inhalation. Given the range of biological activities observed for this class of compounds, research on enniatins will likely continue. This review strives to digest the past studies, as well as, describe tools and techniques that can be utilized to overcome the challenges associated with the structure elucidation of mixtures of enniatin homologs.

Additional Information

Journal of Antibiotics, 2012, 65, 541-549. PMID: 22990381; doi: 10.1038/ja.2012.71
Language: English
Date: 2012
cyclohexadepsipeptide, enniatin, enniatin synthetase, Fusarium, homolog, hydroxyisovaleric acid

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