Abstract
In the course of our studies on the heterologous expression of giant biosynthetic genes, we discovered a novel cryptic biosynthetic gene cluster in Streptomyces rochei IFO12908. During our efforts to express biosynthetic genes using the host SUKA strain derived from Streptomyces avermitilis, a novel polyene macrolactam compound designated as JBIR-156 was produced. We report herein the cloning and heterologous expression of the JBIR-156 biosynthetic gene cluster, and the isolation, structure determination, and cytotoxic activity of this novel compound.
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