Engineering Cupriavidus necator H16 for heterotrophic and autotrophic production of myo-inositol
文献类型: 外文期刊
第一作者: Wang, Xiaolu
作者: Wang, Xiaolu;Wang, Kaikai;Wang, Lei;Luo, Huiying;Wang, Yaru;Wang, Yuan;Tu, Tao;Qin, Xing;Su, Xiaoyun;Bai, Yingguo;Yao, Bin;Huang, Huoqing;Zhang, Jie;Wang, Lei
作者机构:
关键词: Cupriavidus necator; Metabolic engineering; Myo-inositol; Renewable feedstocks; CO2
期刊名称:BIORESOURCE TECHNOLOGY ( 影响因子:11.4; 五年影响因子:10.6 )
ISSN: 0960-8524
年卷期: 2023 年 368 卷
页码:
收录情况: SCI
摘要: Bioconversion of sustainable feedstocks to commodity chemicals is considered as an effective solution for transforming the fossil-based economy into a carbon-neutral model. Here, the CO2-fixing bacterium Cupriavidus necator H16 was exploited for myo-inositol production from renewable substrates. First, by introducing the glucose transportation system, the glucose consumption route was established. Second, two key enzymes involved in myo-inositol biosynthesis were screened and evaluated. A myo-inositol-producing strain was con-structed via overexpression of myo-inositol-3-phosphate synthase from Saccharomyces cerevisiae and inositol monophosphatase from Escherichia coli. Finally, carbon flux redirection was achieved through disruption of Entner-Doudoroff pathway and poly(3-hydroxybutyrate) synthesis pathway, resulting in a final myo-inositol production of 520.2, 1076.3 and 1054.8 mg/L from glucose, glycerol and CO2, respectively. The myo-inositol production level from CO2 achieved here set up the record. This study underlines the potential of C. necator to be utilized as microbial factory for upcycling the renewable feedstocks and CO2 to high-value biochemicals.
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