Metal-Directed Design of Supramolecular Protein Assemblies

Area of Science:

• Synthetic biology
• Molecular design
• Biochemistry

Background:

• Protein-protein interactions (PPIs) and self-assembly are crucial for cellular functions.
• Designing complex, noncovalent interfaces for PPIs and self-assembly is challenging.

Purpose of the Study:

• To develop novel strategies for protein self-assembly and molecular design.
• To overcome the complexity of engineering natural protein interfaces.

Main Methods:

• Developed metal-directed protein self-assembly (MDPSA) and metal-templated interface redesign (MeTIR).
• Utilized metal coordination properties (strength, directionality, reversibility).
• Employed a model protein (cytochrome cb562) for building supramolecular architectures.

Main Results:

• Created diverse functional supramolecular architectures, including tunable oligomers and metalloprotein complexes.
• Demonstrated self-assembly of metalloprotein complexes into novel metalloenzymes within living cells.
• Successfully applied MDPSA and MeTIR with minimal design and engineering.

Conclusions:

• MDPSA and MeTIR offer efficient approaches for designing novel protein assemblies.
• These strategies can be applied to various protein systems for creating new structures and functions.
• The findings advance synthetic biology and molecular design by enabling the creation of non-natural protein architectures.