A plasmid toolkit for cloning chimeric cDNAs encoding customized fusion proteins into any Gateway destination...

Area of Science:

• Molecular Biology
• Biotechnology
• Synthetic Biology

Background:

• Genome sequencing projects have yielded valuable ORFeome clone collections for model organisms.
• Gateway cloning technology simplifies open reading frame (ORF) subcloning for protein function studies.
• Existing Gateway destination vectors have limitations in fusion protein construction due to inbuilt modules and model organism specificity.

Purpose of the Study:

• To develop a versatile cloning toolkit for constructing fully-customizable three-part fusion proteins.
• To overcome limitations of current systems by enabling flexible fusion protein design.
• To facilitate the use of existing ORFeome collections without modification.

Main Methods:

• Development of a cloning toolkit based on the MultiSite Gateway cloning system.
• Construction of three component plasmids for encoding fusion protein parts.
• Demonstration of functionality via expression of prototype fluorescent fusions in transiently-transfected cells.

Main Results:

• A versatile toolkit for creating three-part fusion proteins was developed.
• The system allows in-frame cloning of ORFs flanked by two functional modules.
• Increased fusion combination possibilities arise as a third part no longer requires a promoter.

Conclusions:

• A toolkit for creating fusion proteins with customized N- and C-terminal modules from Gateway entry clones was developed.
• This method allows the direct use of ORFeome-derived entry clones.
• Existing Gateway destination vectors can be easily adapted for diverse fusion protein expression.