Simplifying protein expression with ligation-free, traceless and tag-switching plasmids

Area of Science:

• Molecular Biology
• Synthetic Biology
• Protein Engineering

Background:

• Synthetic biology and genome-scale protein studies necessitate efficient methods for cloning, expression, and purification.
• Co-expression of multiple proteins and the production of fusion proteins with purification and solubility tags are frequently required.

Purpose of the Study:

• To survey plasmid vectors offering features for rapid cloning, expression, and purification.
• To focus on tools enabling traceless tagging for seamless removal of fusion tags post-purification.
• To introduce the pHLIC vector system designed for enhanced protein production workflows.

Main Methods:

• Review of key plasmid vector features: replication origins, resistance markers, promoters, and cloning methods.
• Analysis of fusion tags and their proteolytic cleavage for traceless removal.
• Description of the pHLIC vector system, highlighting its integrated functionalities.

Main Results:

• Identification of plasmid vectors with capabilities for rapid cloning and traceless tagging.
• Demonstration of the pHLIC system's capacity for simple cloning, overexpression, and facile purification.
• Confirmation of traceless cleavage, leaving no residual 'scar' after tag removal.

Conclusions:

• The pHLIC vector system offers a versatile solution for synthetic biology and protein research.
• Efficient protein production is facilitated through rapid cloning, overexpression, and purification with traceless tag removal.
• The developed vector system provides flexibility for modifying fusion tags and adapting to diverse research needs.