Abstract
Tetronate antibiotics make up a growing family of natural products with a wide variety of biological activities. Herein, we report four new tetronates kongjuemycins (KJMs, 5-8) from a coral-associated actinomycete Pseudonocardia kongjuensis SCSIO 11457, and the identification and characterization of the KJM biosynthetic gene cluster (kjm) by heterologous expression, comparative genomic analysis, isotope labeling, and gene knockout studies. The biosynthesis of KJMs is demonstrated to harness diverse precursors from primary metabolism for building secondary metabolites.
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