Three gene expression vector sets for concurrently expressing multiple genes in Saccharomyces cerevisiae.

Area of Science:

• Biotechnology
• Synthetic Biology
• Microbial Engineering

Background:

• Yeast, particularly Saccharomyces cerevisiae, is a robust host for industrial fermentation of fuels and chemicals.
• Current methods for expressing multiple genes in yeast are labor-intensive due to inefficient polycistronic transcription.

Purpose of the Study:

• To develop systematic and convenient genetic engineering tools for expressing multiple genes concurrently in Saccharomyces cerevisiae.
• To facilitate advanced metabolic engineering and the construction of novel yeast strains.

Main Methods:

• Construction of multi-copy and integration vector sets for expressing two or three genes.
• Utilized three classical promoters for gene expression.
• Monitored gene expression capabilities using green fluorescent protein.
• Assessed concurrent gene expression using three different fluorescent proteins.

Main Results:

• Successfully constructed and validated vector sets for concurrent multi-gene expression in Saccharomyces cerevisiae.
• Demonstrated the comparative expression capabilities of the developed vectors.
• Confirmed the simultaneous expression of multiple genes within a single yeast host.

Conclusions:

• The developed genetic tools provide a systematic and convenient method for multi-gene expression in yeast.
• These tools will accelerate the metabolic engineering of yeast and the development of genetically engineered strains for diverse applications beyond biofuels and chemicals.