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Study of protein dynamics in solution by measurement of 13Cα-13CO NOE and 13CO longitudinal relaxation

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Summary

13Cα-13CO homonuclear NOE and 13CO T1 relaxation were measured for a 20 kDa protein using tripleresonance pulse sequences. The experiments were sufficiently sensitive to obtain statistically significant differences in relaxation parameters over the molecule. The 13Cα-13CO cross-relaxation rate, obtained from these data, is directly proportional to an order parameter describing local motion and it is largely independent of the local correlation time. It is therefore a relatively straightforward observable for the identification of local dynamics.

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Zeng, L., Fischer, M.W.F. & Zuiderweg, E.R.P. Study of protein dynamics in solution by measurement of 13Cα-13CO NOE and 13CO longitudinal relaxation. J Biomol NMR 7, 157–162 (1996). https://doi.org/10.1007/BF00203826

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  • DOI: https://doi.org/10.1007/BF00203826

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