A simple and universal method to express protein in unfused form

Area of Science:

• Biochemistry
• Molecular Biology
• Protein Engineering

Background:

• Predicting the impact of N- and C-terminal fusions on heterologously expressed protein properties is challenging.
• Unfused recombinant proteins are ideal for applications such as therapeutic protein drug preparation and biochemical research.

Purpose of the Study:

• To develop a simple and universal method for expressing proteins in an unfused form.
• To enable unfused protein expression from plasmids that support fused expression.
• To provide a cost-effective solution for unfused protein production.

Main Methods:

• A novel method utilizing an additional primer for gene cloning.
• Exploiting existing restriction enzyme sites within a plasmid for expression.
• Adapting plasmids that support fused expression for unfused protein production.

Main Results:

• A universal and simple method for achieving higher-level unfused protein expression was established.
• The method requires only an additional primer, minimizing experimental resource increase.
• Successfully demonstrated a practical approach for producing unfused recombinant proteins.

Conclusions:

• The developed method offers an accessible solution for obtaining unfused proteins.
• This technique is particularly beneficial for creating whole-cell biocatalysts, eliminating purification steps.
• Simplifies recombinant protein production for various biochemical and biotechnological applications.