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• W4223946681 abstract "Secondary metabolic gene clusters widely exist in the genomes of Streptomyces but mostly remain silent. To awaken this hidden reservoir of natural products, various strategies concerning secondary metabolic pathways are applied. Here, we describe that butenolide signaling molecule deficiency and glucose addition can interdependently activate the expression of silent oviedomycin biosynthetic gene clusters in Streptomyces ansochromogenes and Streptomyces antibioticus. Since oviedomycin is a promising anti-tumor lead compound, in order to improve its yield, we use the cluster-situated genes (ovmF, ovmG, ovmI and ovmH) encoding the enzymes for acyl carrier protein modification and precursor biosynthesis, and the discrete precursor biosynthetic genes (pyk2, gap1 and accA2) involved in glycolysis to assemble two gene modules (pFGIH and pPGA). Their co-overexpression in ΔsabA (a disruption mutant of sabA encoding SAB synthase) has superimposed effect on the yield of oviedomycin, which can be further increased to 59-fold in the presence of galactose as optimal carbon source. This is the most unambiguous evidence that butenolide signaling system can synergize with the optimization of primary metabolism to regulate the expression of secondary metabolic gene clusters, providing efficient strategies for mining natural products of Streptomyces." @default.
• W4223946681 created "2022-04-19" @default.
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• W4223946681 date "2022-07-01" @default.
• W4223946681 modified "2023-10-15" @default.
• W4223946681 title "A butenolide signaling system synergized with biosynthetic gene modules led to effective activation and enhancement of silent oviedomycin production in Streptomyces" @default.
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• W4223946681 doi "https://doi.org/10.1016/j.ymben.2022.04.002" @default.
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