Abstract
Fast magic-angle spinning and partial sample deuteration allows direct detection of 1H in solid-state NMR, yielding significant gains in mass sensitivity. In order to further analyze the spectra, 1H detection requires assignment of the 1H resonances. In this work, resonance assignments of backbone HN and Hα are presented for HET-s(218–289) fibrils, based on the existing assignment of Cα, Cβ, C’, and N resonances. The samples used are partially deuterated for higher spectral resolution, and the shifts in resonance frequencies of Cα and Cβ due to the deuterium isotope effect are investigated. It is shown that the deuterium isotope effect can be estimated and used for assigning resonances of deuterated samples in solid-state NMR, based on known resonances of the protonated protein.
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Acknowledgements
This work has been supported by the Swiss National Science Foundation (Grants 200020_146757 and 200020_159707) and by the French ANR (ANR-14-CE09-0024B).
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Smith, A.A., Ravotti, F., Testori, E. et al. Partially-deuterated samples of HET-s(218–289) fibrils: assignment and deuterium isotope effect. J Biomol NMR 67, 109–119 (2017). https://doi.org/10.1007/s10858-016-0087-0
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DOI: https://doi.org/10.1007/s10858-016-0087-0