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Abstract
The self-assembly of the beta-amyloid peptide (Aβ) into amyloid aggregates is a central phenomenon associated with Alzheimer's disease. Here, we report chemical modifications of key amino acid residues of Aβ42 (Y10, H13, H14, and M35) by photoexcited thioflavin-T (ThT), a fluorescent probe of amyloid structure. The quantitative chemical kinetics analysis shows that the oxidized monomer species does not self-assemble, nor perturb the aggregation kinetics of non-oxidized Aβ42.
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