A TetR family transcriptional regulator, SP_2854 can affect the butenyl-spinosyn biosynthesis by regulating glucose metabolism in Saccharopolyspora pogona

Microbial Cell Factories

Ling Shuai¹  Yunlong Li¹  Liqiu Xia¹  Jiao Xie¹  Jie Rang¹  Ziyuan Xia¹  Xiaomin Li¹  Li Cao¹  Shengbiao Hu¹  Yang Liu¹  Qingji Xie² 

[1] Hunan Provincial Key Laboratory for Microbial Molecular Biology, State Key Laboratory of Development Biology of Freshwater Fish, College of Life Science, Hunan Normal University;Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (MOE of China), National & Local Joint Engineering Laboratory for New Petro-Chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University;

关键词: Saccharopolyspora pogona;    Butenyl-spinosyn;    SP_2854;    Omics analysis;    Metabolic engineering;   

DOI  :  10.1186/s12934-022-01808-2

来源: DOAJ

【 摘 要 】

Abstract Background Butenyl-spinosyn produced by Saccharopolyspora pogona exhibits strong insecticidal activity and a broad pesticidal spectrum. Currently, important functional genes involve in butenyl-spinosyn biosynthesis remain unknown, which leads to difficulty in efficiently understanding its regulatory mechanism, and improving its production by metabolic engineering. Results Here, we identified a TetR family transcriptional regulator, SP_2854, that can positively regulate butenyl-spinosyn biosynthesis and affect strain growth, glucose consumption, and mycelial morphology in S. pogona. Using targeted metabolomic analyses, we found that SP_2854 overexpression enhanced glucose metabolism, while SP_2854 deletion had the opposite effect. To decipher the overproduction mechanism in detail, comparative proteomic analysis was carried out in the SP-2854 overexpressing mutant and the original strain, and we found that SP_2854 overexpression promoted the expression of proteins involved in glucose metabolism. Conclusion Our findings suggest that SP_2854 can affect strain growth and development and butenyl-spinosyn biosynthesis in S. pogona by controlling glucose metabolism. The strategy reported here will be valuable in paving the way for genetic engineering of regulatory elements in actinomycetes to improve important natural products production.

【 授权许可】

Unknown