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Dynamics and Fluidity of Amyloid Fibrils: A Model of Fibrous Protein Aggregates
journal contribution
posted on 2002-11-28, 00:00 authored by Ami S. Lakdawala, David M. Morgan, Dennis C. Liotta, David G. Lynn, James P. SnyderA previous experimentally defined model for the fibril formed from the core residues of the β-amyloid (Aβ) peptides of Alzheimer's disease, 10YEVHHQKLVFFAEDVGSNKGAIIGLM, Aβ(10−35) using spectroscopic and scattering analyses reports on the average structure, benefiting immensely from the homogeneous assembly of Aβ(10−35). However, the energetic constraints that contribute to fibril dynamics and stability remain poorly understood. Here we perform molecular dynamics simulations to extend the structural assignment by providing evidence for a dynamic average ensemble with transient backbone H-bonds and internal solvation contributing to the inherent stability of amyloid fibrils.