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Updated: Aug 5, 2026
09:54
Synthesis and Characterization of 1,2-Dithiolane Modified Self-Assembling Peptides
Published on: August 20, 2018
Valence-sensitive assembly of a Cu-amyloid peptide network
Anthony Sementilli1,2, Youngsun Kim1, Wei Li1
1Departments of Chemistry and Physics, Emory University, Atlanta, GA 30322, USA. kwarnck@emory.edu.
Chemical Communications (Cambridge, England)
|July 27, 2026
Summary
The oxidation state of copper ions influences peptide assembly kinetics. Controlling copper
Area of Science:
- Biochemistry
- Materials Science
- Nanotechnology
Background:
- External factors like biopolymers and metal ions can guide peptide self-assembly.
- Controlling peptide assembly is crucial for understanding and modulating biological processes.
Purpose of the Study:
- To investigate the effect of transition metal ion valence on peptide nucleation and assembly.
- To explore how copper ion oxidation state impacts the kinetics of amyloid-like fibril formation.
Main Methods:
- Utilized a model Aβ peptide congener (HHQALVFFA-NH2).
- Employed circular dichroism spectroscopy to monitor aggregation rates.
- Compared templating effects of Cu(II) versus Cu(I) ions.
Main Results:
- Copper ion valence significantly affects peptide assembly kinetics.
- Cu(I) templating accelerated aggregation from months to 90 minutes.
- The Cu-peptide lattice retained robust oxidizing properties.
Conclusions:
- The redox state of templating ions is a critical factor in seeding cross-β network growth.
- Metal-peptide interactions can be switched from inhibitory to productive by controlling redox state.
- Assembly kinetics can be modulated by controlling the ion's oxidation state, offering a new approach for amyloid growth control.
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