Carbohydrate Polymers, Год журнала: 2024, Номер 352, С. 123177 - 123177
Опубликована: Дек. 25, 2024
Язык: Английский
Carbohydrate Polymers, Год журнала: 2024, Номер 352, С. 123177 - 123177
Опубликована: Дек. 25, 2024
Язык: Английский
Journal of Chromatography A, Год журнала: 2025, Номер 1748, С. 465865 - 465865
Опубликована: Март 11, 2025
Язык: Английский
Процитировано
1Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160239 - 160239
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
0Journal of Agricultural and Food Chemistry, Год журнала: 2025, Номер 73(9), С. 5376 - 5384
Опубликована: Фев. 18, 2025
Biological production of human milk oligosaccharides (HMOs) using metabolically engineered strains is a research hotspot in food biotechnology, but less effort has been made on the biological sialylated complex HMOs. Sialyllacto-N-tetraose c only monosialylated HMO top 15 In this study, metabolic pathway LST was constructed Escherichia coli BL21(DE3) by introducing three sequential glycosyltransferases: β1,3-N-acetylglucosaminyltransferase, β1,4-galactosyltransferase, and α2,6-sialyltransferase. The cytidine 5′-monophospho (CMP)-N-acetylneuraminic acid (Neu5Ac) enhanced to improve production. β1,4-galactosyltransferase from Helicobacter pylori J99 (HpGalT) α2,6-sialyltransferase Vespertiliibacter pulmonis (ED6ST) were screened as pair key glycosyltransferases for enhancing final strain could produce 1.718 9.745 g/L shake-flask fed-batch cultivation, respectively, indicating feasibility efficient biosynthesis
Язык: Английский
Процитировано
0Process Biochemistry, Год журнала: 2025, Номер unknown
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
0Journal of Agricultural and Food Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 19, 2024
Difucosyllactose (DFL), an important kind of fucosylated human milk oligosaccharides (HMOs), has garnered considerable attention due to its excellent physiological activities in infants. Previously, we achieved de novo biosynthesis DFL; however, substantial residual intermediates fucosyllactoses (FL) were detected. In this study, DFL was optimized, and FL reduced by regulating metabolic pathways. Different plasmid combinations used regulate gene expression, achieving optimal flux balance between 2′-FL DFL. The expression level key enzyme α-1,3-fucosyltransferase (α-1,3-FT, FucTa) then enhanced increasing copy number integrating fucTa into the chromosome. Exocytosis deleting sugar efflux transporter setA gene, thereby minimizing FL. Finally, strain BSF41 produced 55.3 g/L with only 2.59 a 5 L fermentor, representing highest reported titer date. This study provides foundation for advancing HMOs.
Язык: Английский
Процитировано
1Carbohydrate Polymers, Год журнала: 2024, Номер 352, С. 123177 - 123177
Опубликована: Дек. 25, 2024
Язык: Английский
Процитировано
1