Bacterial exopolysaccharides: Chemical structures, gene clusters and genetic engineering

Area of Science:

• Microbiology
• Biochemistry
• Molecular Biology

Background:

• Bacterial extracellular polysaccharides (EPS) have garnered significant research interest due to their diverse structures and functions.
• EPS are synthesized via various pathways, with genes typically organized in clusters on bacterial genomes or plasmids.

Purpose of the Study:

• To review the current knowledge on bacterial EPS, focusing on their structures and biosynthesis.
• To highlight advancements in modifying EPS gene clusters using gene-editing techniques for tailored EPS production.

Main Methods:

• Literature review of studies on bacterial EPS composition, structure, biosynthesis, and function.
• Analysis of genetic engineering and gene-editing approaches applied to EPS synthesis gene clusters.

Main Results:

• Different EPS gene clusters yield EPS with distinct chemical structures and biological activities.
• Gene-editing methods offer powerful tools for modifying EPS biosynthesis pathways.

Conclusions:

• A comprehensive understanding of EPS biosynthesis genes is essential for targeted EPS production.
• Gene editing provides a promising avenue for developing bacteria that produce EPS with specialized biological activities.