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- W3208317676 abstract "d-Pantothenate (DPA) is an important functional chemical that has been widely applied in healthcare, cosmetics, animal food, and feed industries.In this study, a high-yield DPA-producing strain was constructed by metabolic engineering strategies with targeting metabolic driving and by-products minimization. The metabolic driving force of push and pull was firstly obtained to improve the production of DPA via enrichment of precursor pool and synthetic pathway, accumulating 4.29 g L-1 DPA in shake flask fermentation. To eliminate the metabolic pressure on DPA production, an amino throttling system was proposed and successfully attenuated the synthesis of four competitive amino acids by a single-step regulation of gdhA. Further minimization of acetate was carried out by pta deletion, and utilization of β-alanine was improved via enhancing its uptake system with producing 5.78 g L-1 DPA. Finally, the engineered strain produced 66.39 g L-1 DPA with β-alanine addition in fermentor under fed-batch fermentation.This study paved a foundation for the industrial production of DPA." @default.
- W3208317676 created "2021-11-08" @default.
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- W3208317676 date "2021-11-10" @default.
- W3208317676 modified "2023-10-01" @default.
- W3208317676 title "Targeting metabolic driving and minimization of by‐products synthesis for high‐yield production of D‐pantothenate in <i>Escherichia coli</i>" @default.
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- W3208317676 doi "https://doi.org/10.1002/biot.202100431" @default.
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