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Updated: May 17, 2026
10:01
Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
Published on: April 8, 2020
Modular assembly of protein building blocks to create precisely defined megamolecules
Justin A Modica1, Stratos Skarpathiotis, Milan Mrksich
1Departments of Chemistry and Biomedical Engineering, Howard Hughes Medical Institute, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.
Chembiochem : a European Journal of Chemical Biology
|October 17, 2012
Summary
Researchers created a versatile protein building block, HaloTag-cutinase, for enzyme-promoted assembly. This enables the precise construction of large, complex protein "megamolecules" using small-molecule linkers.
Area of Science:
- Biochemistry
- Protein Engineering
- Synthetic Biology
Background:
- Protein assembly is crucial for biological functions.
- Developing methods for controlled protein construction is an ongoing challenge.
- Existing methods may lack precision in domain orientation and connectivity.
Purpose of the Study:
- To develop a novel hetero-bifunctional protein building block.
- To enable enzyme-promoted, site-specific protein assembly.
- To construct large protein complexes with defined architecture.
Main Methods:
- Engineering of a HaloTag-cutinase fusion protein.
- Utilizing a small-molecule linker for selective protein conjugation.
- Step-wise assembly of protein building blocks.
Main Results:
- Successful construction of a hetero-bifunctional HaloTag-cutinase protein.
- Demonstration of rapid and selective reaction with a small-molecule linker.
- Generation of a 300 kDa protein megamolecule via step-wise assembly.
- Achieved precise control over domain orientation, connectivity, and composition.
Conclusions:
- The developed HaloTag-cutinase system provides a powerful tool for protein engineering.
- Enzyme-promoted assembly allows for the creation of complex protein architectures.
- This method offers precise control over the structure of engineered protein megamolecules.
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