Hunan Provincial Key Laboratory for Microbial Molecular Biology, State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Lushan Road 36, Changsha 410081, China.
J Agric Food Chem. 2021 Oct 27;69(42):12554-12565. doi: 10.1021/acs.jafc.1c03654. Epub 2021 Oct 16.
Butenyl-spinosyn is a highly effective and broad-spectrum biopesticide produced by . However, the yield of this compound is difficult to increase because the regulatory mechanism of secondary metabolism is still unknown. Here, the transcriptional regulator Sp13016 was discovered to be highly associated with butenyl-spinosyn synthesis and bacterial growth. Overexpression of improved butenyl-spinosyn production to a level that was 2.84-fold that of the original strain, while deletion of resulted in a significant decrease in yield and growth inhibition. Comparative proteomics revealed that these phenotypic changes were attributed to the influence of Sp13016 on the central carbon metabolism pathway to regulate the supply of precursors. Our research helps to reveal the regulatory mechanism of butenyl-spinosyn biosynthesis and provides a reference for increasing the yield of natural products of .
丁烯基多杀菌素是一种高效广谱的生物农药,由 产生。然而,由于次级代谢调控机制尚不清楚,该化合物的产量难以提高。在这里,发现转录调节剂 Sp13016 与丁烯基多杀菌素的合成和细菌生长高度相关。过表达 可将丁烯基多杀菌素的产量提高到原始菌株的 2.84 倍,而缺失 则导致产量显著下降和生长抑制。比较蛋白质组学揭示了这些表型变化归因于 Sp13016 对中心碳代谢途径的影响,以调节前体的供应。我们的研究有助于揭示丁烯基多杀菌素生物合成的调控机制,并为提高 的天然产物产量提供参考。
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