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Updated: Aug 11, 2026

A11-positive β-amyloid Oligomer Preparation and Assessment Using Dot Blotting Analysis
Published on: May 22, 2018
Modulatory effects of pH, Cu+2 and sheet breakers on aggregation of amyloid peptides
Kris Beking1, Xiaolei Hao, Sarmistha Basak
1Regional Protein Chemistry Center, Diseases of Aging Program, Ottawa Health Research Institute, 725 Parkdale Ave, Ottawa, ON. K1Y 4E9, Canada.
Abstract:
The study explores in vitro by circular dichroism and mass spectrometry the effects of pH, Cu+2 ions and sheet-breakers on the secondary structures and self-aggregation of beta-amyloid peptides [Abeta43, Abeta42 and Abeta40] of Alzheimer's disease. Within pH 5.4-7.3, more sheet structures and aggregates containing up to 11 peptide units were observed. Cu+2 ions led to oxidative degradation or aggregation depending on its concentration and time of incubation. beta-sheet breakers can reverse the self-aggregation process, suggesting their potential therapeutic use.
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