L-Fucose production by engineered Escherichia coli

Area of Science:

• Biotechnology
• Metabolic Engineering
• Microbial Fermentation

Background:

• L-Fucose is a key component of mammalian glycans and glycolipids.
• Current L-fucose production methods from algae or microbial polysaccharides are not cost-effective or scalable.
• There is a need for economical and large-scale L-fucose production strategies.

Purpose of the Study:

• To develop an efficient microbial fermentation strategy for L-fucose production.
• To engineer an Escherichia coli strain capable of producing L-fucose.
• To establish a scalable and economical method for manufacturing L-fucose.

Main Methods:

• Genomic modification of Escherichia coli to eliminate endogenous L-fucose and lactose metabolism.
• Engineering the strain for the production of 2'-fucosyllactose (2'-FL).
• Developing a one-pot biosynthesis strategy to liberate L-fucose from 2'-FL via microbial fermentation.

Main Results:

• Engineered E. coli strain successfully produced L-fucose.
• Achieved a L-fucose titer of 16.7 g/L.
• Demonstrated a productivity of 0.1 g·L^-1·h^-1 in fed-batch fermentation.

Conclusions:

• Presented an efficient one-pot microbial biosynthesis strategy for monomeric L-fucose production.
• The developed method makes large-scale industrial production of L-fucose feasible.
• This engineered E. coli strain offers a promising platform for sustainable L-fucose manufacturing.