[HTML][HTML] Antiparallel triple-strand architecture for prefibrillar Aβ42 oligomers

L Gu, C Liu, JC Stroud, S Ngo, L Jiang, Z Guo - Journal of Biological …, 2014 - ASBMB
Aβ42 oligomers play key roles in the pathogenesis of Alzheimer disease, but their structures
remain elusive partly due to their transient nature. Here, we show that Aβ42 in a fusion …

[HTML][HTML] Ring-like N-fold Models of Aβ42 fibrils

W Xi, UHE Hansmann - Scientific Reports, 2017 - nature.com
When assembling as fibrils Aβ40 peptides can only assume U-shaped conformations while
Aβ42 can also arrange as S-shaped three-stranded chains. We show that this allows Aβ42 …

Emergence of barrel motif in amyloid-β trimer: a computational study

HL Nguyen, HQ Linh, P Matteini… - The Journal of …, 2020 - ACS Publications
Amyloid-β (Aβ) peptides form assemblies that are pathological hallmarks of Alzheimer's
disease. Aβ oligomers are soluble, mobile, and toxic forms of the peptide that act in the …

Stability of Aβ11–40 trimers with parallel and antiparallel β-sheet organizations in a membrane-mimicking environment by replica exchange molecular dynamics …

ST Ngo, PH Nguyen, P Derreumaux - The Journal of Physical …, 2020 - ACS Publications
The aggregation of the amyloid (Aβ) peptide of 39–43 amino acids into plaques is observed
in the brain of Alzheimer's disease (AD) patients, but the mechanisms underlying the …

Nanoscale Infrared Spectroscopy Identifies Parallel to Antiparallel β-Sheet Transformation of Aβ Fibrils

S Banerjee, D Baghel, M Hasan Ul Iqbal… - The journal of physical …, 2022 - ACS Publications
Spontaneous aggregation of amyloid beta (Aβ) proteins leading to the formation of
oligomers and eventually into fibrils has been identified as a key pathological signature of …

[HTML][HTML] Anatomy and formation mechanisms of early amyloid-β oligomers with lateral branching: graph network analysis on large-scale simulations

M Yuan, X Tang, W Han - Chemical Science, 2022 - pubs.rsc.org
Oligomeric amyloid-β aggregates (AβOs) effectively trigger Alzheimer's disease-related
toxicity, generating great interest in understanding their structures and formation …

[HTML][HTML] Structural and fluctuational difference between two ends of Aβ amyloid fibril: MD simulations predict only one end has open conformations

H Okumura, SG Itoh - Scientific reports, 2016 - nature.com
A β amyloid fibrils, which are related to Alzheimer's disease, have a cross-β structure
consisting of two β-sheets: β 1 and β 2. The A β peptides are thought to be serially arranged …

The destructive mechanism of Aβ 1–42 protofibrils by norepinephrine revealed via molecular dynamics simulations

D Gao, J Wan, Y Zou, Y Gong, X Dong, Z Xu… - Physical Chemistry …, 2022 - pubs.rsc.org
Amyloid-β (Aβ) fibrillary plaques represent the main hallmarks of Alzheimer's disease (AD),
in addition to tau neurofibrillary tangles. Disrupting early-formed Aβ protofibrils is considered …

Novel Disassembly Mechanisms of Sigmoid Aβ42 Protofibrils by Introduced Neutral and Charged Drug Molecules

X Xing, C Liu, A Ali, B Kang, P Li… - ACS Chemical …, 2019 - ACS Publications
Alzheimer's disease (AD) is characterized by fibrillar deposits of amyloid-β (Aβ) peptides
and neurofibrillary tangles of Tau proteins. Aβ peptides are composed of 37–49 residues …

Hierarchical self-assembly mechanism of ladder-like orientated Aβ40 single-stranded protofibrils into multistranded mature fibrils

M Tian, B Li, L Shen - ACS Macro Letters, 2020 - ACS Publications
The complex self-assembly processes in three dimensions of Alzheimer's β-peptide (Aβ)
amyloid protofibrils into polymorphic mature fibrils, particularly the relative protofibril …