Synthetic protein switches: Combinatorial linker engineering with iFLinkC.

Area of Science:

• Biochemistry and Molecular Biology
• Synthetic Biology
• Protein Engineering

Background:

• Linker engineering is crucial for designing synthetic protein switches and sensors.
• Current methods for linker engineering lack systematic strategies and rely heavily on trial-and-error.
• Understanding the biophysical properties of linkers and their role in protein conformational changes is limited.

Purpose of the Study:

• To address the scarcity of methods for generating genetic linker diversity.
• To develop a systematic and scalable approach for linker engineering.
• To facilitate the construction of advanced synthetic protein switches and sensors.

Main Methods:

• Iterative functional linker cloning (iFLinkC) was developed for combinatorial assembly of linker elements.
• Sequence-verified in-house repositories of linker elements and functional domains were utilized.
• The recursive nature of iFLinkC enables exponential generation of linker diversity.

Main Results:

• iFLinkC provides a scalable method for generating diverse linkers.
• The approach overcomes limitations of experimental trial-and-error in linker engineering.
• Combinatorial assembly leads to exponential increase in linker diversity from limited elements.

Conclusions:

• Iterative functional linker cloning (iFLinkC) is an effective strategy for synthetic biology.
• This method significantly enhances the ability to engineer protein switches and sensors.
• iFLinkC offers a powerful tool for advancing protein engineering and synthetic biology.