Journal
FEBS LETTERS
Volume 582, Issue 13, Pages 1865-1870Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.febslet.2008.05.002
Keywords
Alzheimer's disease; amyloid beta-peptide; p3 peptide; oligomeric toxic forms; molecular models
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In previously proposed models of AD soluble oligomers, the N-terminal domain A beta(1-16), which is missing in p3 peptides, protects the hydrophobic core of the oligomers from the solvent. Without this N-terminal part, oligomers of p3 peptides would likely expose hydrophobic residues to water and would consequently be less stable. We thus suggest, based on theoretical and experimental results, that p3 peptides would have a low propensity to assemble into stable oligomers, evolving then directly to fibrillar aggregates. These properties may explain why p3 would be devoid of any impact on synaptic function and moreover, strengthen the hypothesis that AD oligomers are the principal synaptotoxic forms of AD peptides in Alzheimer disease. (c) 2008 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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