Fundamental analysis of Escherichia coli mutant S17-3 capable of high-density growth
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    Abstract:

    [Background] When Escherichia coli K-12 mutant S17-3 carries high copy number plasmid pBHR68 expressing the gene cluster for synthesis of poly-3-hydroxybutyrate (PHB), it presents some special physiological features, such as high-density growth, low pH tolerance, and high yield of colonic acid (CA) at low pH. [Objective] To systematically explore the molecular mechanism of high-density growth that related to strain (E. coli S17-3) and plasmid (pBHR68), and to reveal the coupling mechanism between the high-density growth and the anabolism of PHB or CA. [Methods] We dissected the plasmid composition and the gene structure for CA synthesis pathway that might have caused high-density growth, searched for key mutations by multiple genome alignment analysis. The transcriptomic data of E. coli S17-3 and its growth performances in different media were scrutinized, the functions of the verified genes were analyzed by gene knockout. [Results] The high-density growth of E. coli S17-3 was related to the overexpression of the whole gene cluster for PHB synthesis, as well as the multi-site mutations within rhsA; RcsA may play as a key factor that not only regulates the production of CA but also mediates the channeling of carbon flow during E. coli S17-3's growth; The knockout of key enzymes in CA operon led to the increase of biomass at low pH; In addition, the high-density growth of E. coli S17-3/pBHR68 may also be related to lactose metabolism, since lacZ null mutation abolished the capability of CA synthesis as well as the high-density growth. [Conclusion] In this study, we analyzed the factors that may link to the high-density growth of E. coli S17-3, and found out some important clues which laid a research foundation for studies to remold E. coli S17-3 as a chassis cell for production of oligosaccharides.

    Reference
    [1] Riesenberg D, Menzel K, Schulz V, Schumann K, Veith G, Zuber G, Knorre WA. High cell density fermentation of recombinant Escherichia coli expressing human interferon alpha 1[J]. Applied Microbiology and Biotechnology, 1990, 34(1):77-82
    [2] Shiloach J, Fass R. Growing E. coli to high cell density-a historical perspective on method development[J]. Biotechnology Advances, 2005, 23(5):345-357
    [3] Wu HY, Chen SW, Ji MH, Chen Q, Shi JP, Sun JS. Activation of colanic acid biosynthesis linked to heterologous expression of the polyhydroxybutyrate pathway in Escherichia coli[J]. International Journal of Biological Macromolecules, 2019, 128:752-760
    [4] Chen Q, Wu HY, Wang ZS, Xie YK, Li YQ, Sun JS. Multiple-site mutations in Escherichia coli capable of high-density growing induced from the biosynthesis of polyhydroxybutyrate[J]. Biotechnology Bulletin, 2020, 36(7):112-118(in Chinese)陈桥, 吴海英, 王宗寿, 谢雨康, 李宜青, 孙俊松. 聚羟基丁酸酯合成引发的高密度生长大肠杆菌的多位点突变分析[J]. 生物技术通报, 2020, 36(7):112-118
    [5] Mosberg JA, Lajoie MJ, Church GM. Lambda red recombineering in Escherichia coli occurs through a fully single-stranded intermediate[J]. Genetics, 2010, 186(3):791-799
    [6] Wu H, Chen JC, Chen GQ. Engineering the growth pattern and cell morphology for enhanced PHB production by Escherichia coli[J]. Applied Microbiology and Biotechnology, 2016, 100(23):9907-9916
    [7] Sambrook J, Fritsch EF, Maniatis T. Molecular Cloning:a Laboratory Manual[M]. Jin DY, Li MF, Trans. 2nd ed. Beijing:Science Press, 1992(in Chinese)萨姆布鲁克J, 弗里奇EF, 曼尼阿蒂斯T. 分子克隆实验指南[M]. 金冬雁, 黎孟枫, 译. 2版. 北京:科学出版社, 1992
    [8] Wu HY. Metabolic engineering of Escherichia coli for production of polyhydroxybutyrate and colanic acid[D]. Shanghai:Doctoral Dissertation of Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 2019(in Chinese)吴海英. 大肠杆菌聚-β-羟基丁酸酯及胞外多糖可拉酸的合成研究[D]. 上海:中国科学院上海生命科学研究院博士学位论文, 2019
    [9] Steffan NH, Henry DH, Robert MH, Jeffrey KP, Larry RP. Site-directed mutagenesis by overlap extension using the polymerase chain reaction[J]. Gene, 1989, 77(1):51-59
    [10] Obadia B, Lacour S, Doublet P, Baubichon-Cortay H, Cozzone AJ, Grangeasse C. Influence of tyrosine-kinase wzc activity on colanic acid production in Escherichia coli K12 cells[J]. Journal of Molecular Biology, 2007, 367(1):42-53
    [11] Aggarwal K, Lee KH. Overexpression of cloned RhsA sequences perturbs the cellular translational machinery in Escherichia coli[J]. Journal of Bacteriology, 2011, 193(18):4869-4880
    [12] Navasa N, Rodríguez-Aparicio L, Ferrero MÁ, Monteagudo-Mera A, Martínez-Blanco H. Polysialic and colanic acids metabolism in Escherichia coli K92 is regulated by RcsA and RcsB[J]. Bioscience Reports, 2013, 33(3):e00038
    [13] Partridge JD, Sanguinetti G, Dibden DP, Roberts RE, Poole RK, Green J. Transition of Escherichia coli from aerobic to micro-aerobic conditions involves fast and slow reacting regulatory components[J]. Journal of Biological Chemistry, 2007, 282(15):11230-11237
    [14] Huang D, Yang KX, Liu J, Xu YY, Wang YY, Wang R, Liu B, Feng L. Metabolic engineering of Escherichia coli for the production of 2'-fucosyllactose and 3-fucosyllactose through modular pathway enhancement[J]. Metabolic Engineering, 2017, 41:23-38
    [15] Choi YH, Park BS, Seo JH, Kim BG. Biosynthesis of the human milk oligosaccharide 3-fucosyllactose in metabolically engineered Escherichia coli via the salvage pathway through increasing GTP synthesis and β-galactosidase modification[J]. Biotechnology and Bioengineering, 2019, 116(12):3324-3332
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XIE Yukang, WU Haiying, FU Cong, CHEN Ai, SHI Jiping, SUN Junsong. Fundamental analysis of Escherichia coli mutant S17-3 capable of high-density growth[J]. Microbiology China, 2021, 48(8): 2501-2511

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History
  • Received:March 14,2021
  • Adopted:March 31,2021
  • Online: July 30,2021
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