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TROSY pulse sequence for simultaneous measurement of the 15N R1 and {1H}-15N NOE in deuterated proteins.


ABSTRACT: A TROSY-based NMR experiment is described for simultaneous measurement of the 15N longitudinal relaxation rate constant R1 and the {1H}-15N nuclear Overhauser enhancement. The experiment is based on the observation that the TROSY mixing pulse sequence element symmetrically exchanges 1H and 15N magnetizations. The accuracy of the proposed technique is validated by comparison to independent measurements of both relaxation parameters for the protein ubiquitin. The simultaneous experiment is approximately 20-33% shorter than conventional sequential measurements.

SUBMITTER: O'Brien PA 

PROVIDER: S-EPMC6510663 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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TROSY pulse sequence for simultaneous measurement of the <sup>15</sup>N R<sub>1</sub> and {<sup>1</sup>H}-<sup>15</sup>N NOE in deuterated proteins.

O'Brien Paul A PA   Palmer Arthur G AG  

Journal of biomolecular NMR 20180416 4


A TROSY-based NMR experiment is described for simultaneous measurement of the <sup>15</sup>N longitudinal relaxation rate constant R<sub>1</sub> and the {<sup>1</sup>H}-<sup>15</sup>N nuclear Overhauser enhancement. The experiment is based on the observation that the TROSY mixing pulse sequence element symmetrically exchanges <sup>1</sup>H and <sup>15</sup>N magnetizations. The accuracy of the proposed technique is validated by comparison to independent measurements of both relaxation parameters  ...[more]

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