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Localized and Collective Motions in HET-s(218-289) Fibrils from Combined NMR Relaxation and MD Simulation
- Journal Article
Nuclear magnetic resonance (NMR) relaxation data and molecular dynamics (MD) simulations are combined to characterize the dynamics of the fungal prion HET-s(218-289) in its amyloid form. NMR data is analyzed with the dynamics detector method, which yields timescale-specific information. An analogous analysis is performed on MD trajectories. Because specific MD predictions can be verified as agreeing with the NMR data, MD was used for further interpretation of NMR results: for the different timescales, cross-correlation coefficients were derived to quantify the correlation of the motion between different residues. Short timescales are the result of very local motions, while longer timescales are found for longer-range correlated motion. Similar trends on ns- and mu s-timescales suggest that mu s motion in fibrils is the result of motion correlated over many fibril layers. Show more
Journal / seriesAngewandte Chemie. International Edition
Pages / Article No.
PublisherWILEY-V C H VERLAG GMBH
Subjectcorrelation time; cross-correlation; dynamics detector; molecular dynamics; NMR relaxation
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