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  • Title: Transverse relaxation optimised spin-state selective NMR experiments for measurement of residual dipolar couplings.
    Author: Permi P, Annila A.
    Journal: J Biomol NMR; 2000 Mar; 16(3):221-7. PubMed ID: 10805128.
    Abstract:
    Three transverse relaxation optimised NMR experiments (TROSY) for the measurement of scalar and dipolar couplings suitable for proteins dissolved in aqueous iso- and anisotropic solutions are described. The triple-spin-state-selective experiments yield couplings between 1HN-13Calpha, 15N-13Calpha, 1HN-13Calpha(i-1), 15N-13Calpha(i-1), 1HN-13C'(i-1), 15N-13C'(i-1) and 13C'(i-1)-13Calpha(i-1) without introducing nonessential spectral crowding compared with an ordinary two-dimensional 15N-1H correlation spectrum and without requiring explicit knowledge of carbon assignments. This set of alpha/beta-J-TROSY experiments is most useful for perdeuterated proteins in studies of structure-activity relationships by NMR to observe, in addition to epitopes for ligands, also conformational changes induced by binding of ligands.
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