Effect of lipid saturation on amyloid-beta peptide partitioning and aggregation in neuronal membranes: molecular dynamics simulations.

ABSTRACT: Aggregation of amyloid-[Formula: see text] (Aβ) peptides, cleaved from the amyloid precursor protein, is known as a precursor of the Alzheimer's disease (AD). It is also known that Alzheimer's disease is characterized by a substantial decrease of the amount of polyunsaturated lipids in the neuronal membranes of the frontal gray matter. To get insight into possible interconnection of these phenomena, we have carried out molecular dynamics simulations of two fragments of A[Formula: see text] peptide, A[Formula: see text][Formula: see text] and A[Formula: see text][Formula: see text], in four different lipid bilayers: two monocomponent ones (14:0-14:0 PC, 18:0-22:6 PC), and two bilayers containing mixtures of 18:0-18:0 PE, 22:6-22:6 PE, 16:0-16:0 PC and 18:1-18:1 PC lipids of composition mimi

SUBMITTER: Ntarakas N 

PROVIDER: S-EPMC6853862 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature