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Self-Assembling Catalytic Peptide Nanomaterials Capable of Highly Efficient Peroxidase Activity
Oleksii Zozulia1, Liam R Marshall1, Inhye Kim1
1Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY, 13244, USA.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|January 18, 2021
Summary
Short peptides self-assemble into nanomaterials that catalyze reactions. These peptide-hemin materials show high peroxidation activity, demonstrating their utility in catalysis and potential links to enzyme evolution.
Area of Science:
- Biomaterials Science
- Catalysis
- Biochemistry
Background:
- Peptide self-assembly yields versatile nanomaterials.
- These materials can be engineered for catalytic functions.
Purpose of the Study:
- To investigate the catalytic activity of self-assembled peptide-hemin materials.
- To explore the role of self-assembly in peptide-based catalysis.
- To assess the potential for intrinsic peroxidase activity in peptide assemblies.
Main Methods:
- Synthesis of short, seven-residue peptides.
- Complexation of peptides with hemin.
- Characterization of self-assembled structures.
- Assay of peroxidation activity.
Main Results:
- Self-assembled peptide-hemin complexes exhibit highly efficient peroxidation activity (3×10^5 m^-1 s^-1).
- Catalytic activity is dependent on self-assembly; non-assembling controls are inactive.
- Peroxidase activity is observed even without hemin, indicating intrinsic catalytic potential of the assemblies.
Conclusions:
- Self-assembled peptides, particularly with hemin, are effective catalytic materials.
- Self-assembly is crucial for achieving high catalytic efficiency.
- These findings suggest a link between ancient amyloid structures and modern enzyme function, with potential applications in catalysis.
