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- W4387409597 abstract "L-Homoserine is an important amino acid as a precursor in synthesizing many valuable products. However, the low productivity caused by slow L-homoserine production during active cell growth in fermentation hinders its potential applications. In this study, strategies of engineering the synthetic pathway combined with regulating cell division were employed in an L‐homoserine-producing Escherichia coli strain for efficiently biomanufacturing L‐homoserine. First, the flux-control genes in the L-homoserine degradation pathway were omitted to redistribute carbon flux. To drive more carbon flux into L‐homoserine production, the phosphoenolpyruvate-pyruvate-oxaloacetate loop was redrawn. Subsequently, the cell division was engineered by using the self-regulated promoters to coordinate cell growth and L-homoserine production. The ultimate strain HOM23 produced 101.31 g/L L-homoserine with a productivity of 1.91 g/L/h, which presented the highest L-homoserine titer and productivity to date from plasmid-free strains. The strategies used in this study could be applied to constructing cell factories for producing other L-aspartate derivatives." @default.
- W4387409597 created "2023-10-07" @default.
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- W4387409597 date "2023-12-01" @default.
- W4387409597 modified "2023-10-17" @default.
- W4387409597 title "High-efficient production of L-homoserine in Escherichia coli through engineering synthetic pathway combined with regulating cell division" @default.
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- W4387409597 doi "https://doi.org/10.1016/j.biortech.2023.129828" @default.
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