Systematic engineering of cell wall for improving single cell protein (SCP) production

Area of Science:

• Biotechnology
• Metabolic Engineering
• Microbial Production

Background:

• Single-cell protein (SCP) is an emerging alternative protein with potential in animal feed and human nutrition.
• Current SCP research focuses on strain screening, with limited progress in metabolic engineering for enhanced production efficiency.
• Microbial chassis present challenges in protein synthesis and processing, hindering SCP yield.

Purpose of the Study:

• To metabolically engineer Saccharomyces cerevisiae for improved single-cell protein (SCP) production.
• To investigate the impact of cell wall engineering on cellular protein content.
• To elucidate the regulatory mechanisms governing protein biosynthesis in engineered yeast.

Main Methods:

• Genetic modification of Saccharomyces cerevisiae genes involved in cell wall biogenesis and signaling pathways.
• Construction of engineered yeast strains for enhanced SCP production.
• Comparative transcriptomics analysis to understand metabolic regulation.

Main Results:

• Achieved a 32.6% increase in cellular protein content in engineered yeast strains.
• Identified regulatory mechanisms linking carbon and nitrogen metabolism to protein biosynthesis.
• Demonstrated the efficacy of cell wall engineering for SCP enhancement.

Conclusions:

• Metabolic engineering of the Saccharomyces cerevisiae cell wall is an effective strategy to increase SCP production.
• Remodeling of metabolic pathways provides insights for rational design of microbial cell factories.
• This approach offers a pathway to enhance the efficiency of alternative protein production.