Probing amyloid fibril growth by two-dimensional near-ultraviolet spectroscopy.
Probing amyloid fibril growth by two-dimensional near-ultraviolet spectroscopy.
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DOI:
10.1021/jp201164u
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发表时间:
2011-05-19
影响因子:
3.3
通讯作者:
Mukamel, Shaul
中科院分区:
文献类型:
--
作者:
Jiang, Jun;Mukamel, Shaul
Keeping track of the aggregation kinetics of amyloid fibrils is essential for understanding their formation mechanism and eventually developing treatments for misfolded protein-related diseases. A simulation study of a series of Aβ9–40 amyloid fibrils with different size, shows that novel two dimensional near-ultraviolet (2DNUV) spectra contain characteristic signatures of interactions between peptides. Chiral 2DNUV signals show a larger degree of exciton delocalization compared to their non-chiral counterparts. Intensities of specific peaks provide a direct measure of the number of peptides in a fibril. These signals could be used to monitor the fibril growth kinetics, one peptide at a time.
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