The Japanese Mutant Aβ (ΔE22-Aβ1−39) Forms Fibrils Instantaneously, with Low-Thioflavin T Fluorescence: Seeding of Wild-Type Aβ1−40into Atypical Fibrils by ΔE22-Aβ1−39
نویسندگان
چکیده
منابع مشابه
Thioflavin T Binding to Amyloid Fibrils
Treatment of Alzheimer’s disease (AD) is hampered by the fact that the disease progression cannot be tracked in vivo at this time. Understanding the properties of Aβ amyloid fibrils associated with AD is imperative to finding a way to track the progression of the disease. Recently, fluorescent markers, derived from thioflavin T have been developed as markers of AD. This project examines the int...
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In this work, the fluorescence of thioflavin T (ThT) was studied in a wide range of viscosity and temperature. It was shown that ThT fluorescence quantum yield varies from 0.0001 in water at room temperature to 0.28 in rigid isotropic solution (T/η→0). The deviation of the fluorescence quantum yield from unity in rigid isotropic solution suggests that fluorescence quantum yield depends not only...
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Mutations in keratoepithelin are associated with blinding ocular diseases, including lattice corneal dystrophy type 1 and granular corneal dystrophy type 2. These diseases are characterized by deposits of amyloid fibrils and/or granular non-amyloid aggregates in the cornea. Removing the deposits in the cornea is important for treatment. Previously, we reported the destruction of amyloid fibrils...
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Fibrillation of differently modified amyloid β peptides and deposition as senile plaques are hallmarks of Alzheimer's disease. N-terminally truncated variants, where the glutamate residue 3 is converted into cyclic pyroglutamate (pGlu), form particularly toxic aggregates. We compare the molecular structure and dynamics of fibrils grown from wildtype Aβ(1-40) and pGlu3-Aβ(3-40) on the single ami...
متن کاملAnalyzing Thioflavin T Binding to Amyloid Fibrils by an Equilibrium Microdialysis-Based Technique
A new approach for the determination of the amyloid fibril - thioflavin T (ThT) binding parameters (the number of binding modes, stoichiometry, and binding constants of each mode) is proposed. This approach is based on the absorption spectroscopy determination of the concentration of free and bound to fibril dye in solutions, which are prepared by equilibrium microdialysis. Furthermore, the pro...
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ژورنال
عنوان ژورنال: Biochemistry
سال: 2011
ISSN: 0006-2960,1520-4995
DOI: 10.1021/bi1016217