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Structural analysis of the Aβ(15-40) amyloid fibril based on hydrophobicity distribution.

Structural analysis of the Aβ(15-40) amyloid fibril based on hydrophobicity distribution.

Structural analysis of the Aβ(15-40) amyloid fibril based on hydrophobicity distribution.

Acta Biochim Pol. 2018 Nov 21;:

Authors: Dułak D, Banach M, Gadzała M, Konieczny L, Roterman I

Abstract
The Aβ42 amyloid is the causative factor behind various neurodegenerative processes. It forms elongated fibrils which cause structural devastation in brain tissue. The structure of an amyloid seems to be a contradiction of protein folding principles. Our work focuses on the Aβ(15-40) amyloid containing the D23N mutation (also known as the "Iowa mutation"), upon which an in silico experiment is based. Models generated using I-Tasser software as well as the fuzzy oil drop model - regarded as alternatives to the amyloid conformation - are compared in terms of their respective distributions of hydrophobicity (i.e. the existence of a hydrophobic core). In this process, fuzzy oil drop model parameters are applied in assessing the propensity of selected fragments for undergoing amyloid transformation.

PMID: 30465553 [PubMed - as supplied by publisher]

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