Role of water in protein aggregation and amyloid polymorphism

D Thirumalai, G Reddy, JE Straub - Accounts of chemical …, 2012 - ACS Publications
A variety of neurodegenerative diseases are associated with amyloid plaques, which begin
as soluble protein oligomers but develop into amyloid fibrils. Our incomplete understanding …

[HTML][HTML] The good, the bad and the user in soft matter simulations

J Wong-Ekkabut, M Karttunen - Biochimica et Biophysica Acta (BBA) …, 2016 - Elsevier
Molecular dynamics (MD) simulations have become popular in materials science,
biochemistry, biophysics and several other fields. Improvements in computational resources …

Monomer adds to preformed structured oligomers of Aβ-peptides by a two-stage dock–lock mechanism

PH Nguyen, MS Li, G Stock… - Proceedings of the …, 2007 - National Acad Sciences
Nonfibrillar soluble oligomers, which are intermediates in the transition from monomers to
amyloid fibrils, may be the toxic species in Alzheimer's disease. To monitor the early events …

Different force fields give rise to different amyloid aggregation pathways in molecular dynamics simulations

S Samantray, F Yin, B Kav… - Journal of chemical …, 2020 - ACS Publications
The progress toward understanding the molecular basis of Alzheimers's disease is strongly
connected to elucidating the early aggregation events of the amyloid-β (Aβ) peptide …

Effects of All-Atom Molecular Mechanics Force Fields on Amyloid Peptide Assembly: The Case of Aβ16–22 Dimer

VH Man, X He, P Derreumaux, B Ji… - Journal of chemical …, 2019 - ACS Publications
We investigated the effects of 17 widely used atomistic molecular mechanics force fields
(MMFFs) on the structures and kinetics of amyloid peptide assembly. To this end, we …

Carbon nanotube inhibits the formation of β-sheet-rich oligomers of the Alzheimer's amyloid-β (16-22) peptide

H Li, Y Luo, P Derreumaux, G Wei - Biophysical journal, 2011 - cell.com
Alzheimer's disease is associated with the abnormal self-assembly of the amyloid-β (Aβ)
peptide into toxic β-rich aggregates. Experimental studies have shown that hydrophobic …

Role of water in mediating the assembly of Alzheimer amyloid-β Aβ16− 22 protofilaments

MG Krone, L Hua, P Soto, R Zhou… - Journal of the …, 2008 - ACS Publications
The role of water in promoting the formation of protofilaments (the basic building blocks of
amyloid fibrils) is investigated using fully atomic molecular dynamics simulations. Our model …

Dynamics of Asp23−Lys28 Salt-Bridge Formation in Aβ10-35 Monomers

B Tarus, JE Straub, D Thirumalai - Journal of the American …, 2006 - ACS Publications
In the amyloid fibrils formed from long fragments of the amyloid β-protein (Aβ-protein), the
monomers are arranged in parallel and lie perpendicular to the fibril axis. The structure of …

Key residue for aggregation of amyloid-β peptides

SG Itoh, M Yagi-Utsumi, K Kato… - ACS Chemical …, 2022 - ACS Publications
It is known that oligomers of amyloid-β (Aβ) peptide are associated with Alzheimer's disease.
Aβ has two isoforms: Aβ40 and Aβ42. Although the difference between Aβ40 and Aβ42 is …

Effects of all-atom force fields on amyloid oligomerization: replica exchange molecular dynamics simulations of the Aβ 16–22 dimer and trimer

PH Nguyen, MS Li, P Derreumaux - Physical Chemistry Chemical …, 2011 - pubs.rsc.org
The aim of this work is to investigate the effects of molecular mechanics force fields on
amyloid peptide assembly. To this end, we performed extensive replica exchange molecular …