Construction of engineering host by non-random method in Saccharomyces cerevisiae

Area of Science:

• Microbiology
• Molecular Biology
• Biotechnology

Background:

• Developing efficient yeast host strains is crucial for recombinant protein production.
• Wild-type yeast strains often require genetic modification for optimal gene expression.
• Selection markers like leu2 and ura3 deficiencies are valuable for strain engineering.

Purpose of the Study:

• To construct and characterize a novel yeast engineering host strain, GJ30.
• To evaluate the suitability of GJ30 for foreign gene expression compared to existing strains.

Main Methods:

• Construction of GJ30 yeast strain using a non-random engineering approach.
• Utilizing leu2 and ura3 deficiencies as selection markers.
• Polymerase Chain Reaction (PCR) analysis to confirm homologous recombination at target loci.
• Comparative analysis of biological properties including cellular growth density, genetic stability, and gene expression efficiency.

Main Results:

• Successful construction of the GJ30 yeast strain confirmed by PCR analysis.
• GJ30 demonstrated effective homologous recombination at the leu2 and ura3 loci.
• Comparative studies indicated favorable cellular growth density, stability, and gene expression efficiency for GJ30.
• GJ30 outperformed several other tested yeast strains in key biological properties.

Conclusions:

• The engineered yeast strain GJ30 is a robust and efficient host for foreign gene expression.
• GJ30 offers significant advantages for biotechnological applications requiring high-level protein production.
• This novel strain represents a valuable tool for synthetic biology and industrial fermentation processes.