Journal
JOURNAL OF BIOMOLECULAR NMR
Volume 45, Issue 1-2, Pages 17-21Publisher
SPRINGER
DOI: 10.1007/s10858-009-9341-z
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Funding
- EU [EU-NMR JRA3]
- ANR [NT05-4_42781]
- National Science Foundation [MCB-0918362]
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(3) J scalar couplings report on the conformational averaging of backbone phi angles in peptides and proteins, and therefore represent a potentially powerful tool for studying the details of both structure and dynamics in solution. We have compared an extensive experimental dataset with J-couplings predicted from unrestrained molecular dynamics simulation using enhanced sampling available from accelerated molecular dynamics or using long timescale trajectories (200 ns). The dynamic fluctuations predicted to be present along the backbone, in agreement with residual dipolar coupling analysis, are compatible with the experimental (3) J scalar couplings providing a slightly better reproduction of these experimental parameters than a high-resolution static structure.
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