Development of a Combination Fermentation Strategy to Simultaneously Increase Biomass and Enzyme Activity of D-amino acid Oxidase Expressed in Escherichia Coli
Abstract:d-amino acid oxidase (DAAO) is widely used in the industrial preparation of l-amino acids, and cultivating Escherichia coli (E. coli) expressing DAAO for the biosynthesis of l-phosphinothricin (l-PPT) is very attractive. At present, the biomass production of DAAO by fermentation is still limited in large-scale industrial applications because the expression of DAAO during the fermentation process inhibits the growth of host cells, which limits higher cell density. In this study, the factors that inhibit the gro… Show more
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