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Recently Discovered Secondary Metabolites from Streptomyces Species
Authors:Heather J Lacey  Peter J Rutledge
Institution:1.School of Chemistry, The University of Sydney, Camperdown, Sydney, NSW 2006, Australia;2.Microbial Screening Technologies, Smithfield, Sydney, NSW 2164, Australia
Abstract:The Streptomyces genus has been a rich source of bioactive natural products, medicinal chemicals, and novel drug leads for three-quarters of a century. Yet studies suggest that the genus is capable of making some 150,000 more bioactive compounds than all Streptomyces secondary metabolites reported to date. Researchers around the world continue to explore this enormous potential using a range of strategies including modification of culture conditions, bioinformatics and genome mining, heterologous expression, and other approaches to cryptic biosynthetic gene cluster activation. Our survey of the recent literature, with a particular focus on the year 2020, brings together more than 70 novel secondary metabolites from Streptomyces species, which are discussed in this review. This diverse array includes cyclic and linear peptides, peptide derivatives, polyketides, terpenoids, polyaromatics, macrocycles, and furans, the isolation, chemical structures, and bioactivity of which are appraised. The discovery of these many different compounds demonstrates the continued potential of Streptomyces as a source of new and interesting natural products and contributes further important pieces to the mostly unfinished puzzle of Earth’s myriad microbes and their multifaceted chemical output.
Keywords:biosynthesis  macrolides  natural products  peptides  polyketides  secondary metabolites  Streptomyces  structure elucidation  terpenoids
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