Chaperon-mediated single molecular approach toward modulating Abeta peptide aggregation.
We report here a single molecular approach using chaperone-like molecular modulators for modulating the aggregation behavior of a vital analogue of beta-amyloid peptide (Abeta) by using scanning tunneling microscopy. The molecular structures of the beta-sheets for Abeta33-42 peptide are revealed, which are keen to the aggregation of Abeta42 relating to Alzheimer's disease. It was identified that the introduction of chaperone-like modulators could regulate the assembling behavior of the peptide at molecular level. Furthermore, the modulators could also significantly accelerate the aggregation of the peptide in aqueous solution as revealed by light scattering studies. These observations of the molecular modulator effect in peptide assemblies could provide a novel approach toward modulating Abeta peptide aggregations.
National Center for Nanoscience and Technology Beijing 100190, China.
Lei
L
Liu
Lan
L
Zhang
Xiaobo
X
Mao
Lin
L
Niu
Yanlian
Y
Yang
Chen
C
Wang
D016229:Amyloid beta-Peptides / Q000737:chemistry* / Q000648:ultrastructure*; D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D018832:Molecular Chaperones / Q000737:chemistry* / Q000648:ultrastructure*; D008968:Molecular Conformation; D046912:Multiprotein Complexes / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D013499:Surface Properties
D016229:Amyloid beta-Peptides; D018832:Molecular Chaperones; D046912:Multiprotein Complexes