Turn Nucleation Perturbs Amyloid β Self-Assembly and Cytotoxicity
نویسندگان
چکیده
منابع مشابه
Study of Cis–trans Isomerization Mechanism of [3-(3-Aminomethyl) Phenylazo] Phenyl Acetic Acid as a Causative Role in Alzheimer Using Density Functional Theory
Amyloid-β (Aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in Alzheimer’s disease pathology.Uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. Aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...
متن کاملStudy of Cis–trans Isomerization Mechanism of [3-(3-Aminomethyl) Phenylazo] Phenyl Acetic Acid as a Causative Role in Alzheimer Using Density Functional Theory
Amyloid-β (Aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in Alzheimer’s disease pathology.Uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. Aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...
متن کاملSelf-Assembly and Anti-Amyloid Cytotoxicity Activity of Amyloid beta Peptide Derivatives
The self-assembly of two derivatives of KLVFF, a fragment Aβ(16-20) of the amyloid beta (Aβ) peptide, is investigated and recovery of viability of neuroblastoma cells exposed to Aβ (1-42) is observed at sub-stoichiometric peptide concentrations. Fluorescence assays show that NH2-KLVFF-CONH2 undergoes hydrophobic collapse and amyloid formation at the same critical aggregation concentration (cac)...
متن کاملSurface Effects Mediate Self-Assembly of Amyloid-β Peptides
Here we present a label-free method for studying the mechanism of surface effects on amyloid aggregation. In this method, spin-coating is used to rapidly dry samples, in a homogeneous manner, after various incubation times. This technique allows the control of important parameters for self-assembly, such as the surface concentration. Atomic force microscopy is then used to obtain high-resolutio...
متن کاملstudy of cis–trans isomerization mechanism of [3-(3-aminomethyl) phenylazo] phenyl acetic acid as a causative role in alzheimer using density functional theory
amyloid-β (aβ) self-assembly into cross-β amyloidfibrils is implicated in a causative role in alzheimer’s disease pathology.uncertainties persist regarding the mechanisms of amyloid self assembly and the role of metastable prefibrillar aggregates. aβ fibrilsfeature a sheet-turn-sheet motif in the constituent β-strands; as such, turn nucleation has been proposed as a rate-limiting step in the se...
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ژورنال
عنوان ژورنال: Journal of Molecular Biology
سال: 2012
ISSN: 0022-2836
DOI: 10.1016/j.jmb.2012.01.055