A Bacterial Expression Vector Archive (BEVA) for Flexible Modular Assembly of Golden Gate-Compatible Vectors

Area of Science:

• Synthetic Biology
• Molecular Biology
• Bacteriology

Background:

• Bacterial expression vectors are crucial tools in molecular biology and synthetic biology.
• Existing vector construction methods can be time-consuming and costly.
• A need exists for modular and adaptable systems for creating custom bacterial vectors.

Purpose of the Study:

• To introduce the Bacterial Expression Vector Archive (BEVA) for modular vector assembly.
• To demonstrate compatibility with traditional and Golden Gate cloning methods, specifically using Esp3I.
• To facilitate rapid, low-cost, and tailored vector construction for various applications.

Main Methods:

• Development of a modular vector system for bacterial expression.
• Utilizing Type IIS restriction enzyme Esp3I for Golden Gate cloning.
• Construction and testing of three example vectors for gene expression and reporter systems.

Main Results:

• Demonstrated successful Golden Gate cloning in *Escherichia coli*.
• Engineered vectors for gene expression in *Rhizobium leguminosarum*, including in planta.
• Constructed a dual reporter plasmid for simultaneous protein expression.

Conclusions:

• The BEVA system provides a flexible and efficient platform for bacterial vector construction.
• The modular design allows for easy expansion and customization by the scientific community.
• This system supports diverse applications in synthetic biology, microbial engineering, and fundamental research.