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Solid-state NMR heteronuclear coherence transfer using phase and amplitude modulated rf irradiation at the Hartmann–Hahn sideband conditions
- Source :
-
Chemical Physics Letters . Dec2003, Vol. 382 Issue 5/6, p671. 8p. - Publication Year :
- 2003
-
Abstract
- An improved variant of the popular double cross-polarization (DCP) experiment for heteronuclear dipolar recoupling in solid-state NMR spectroscopy under magic-angle-spinning is introduced. By simple phase and amplitude modulation of the rf irradiation at the Hartman-Hahn sideband conditions, the new pulse sequence, dubbed <f>i</f>DCP, enables broadband excitation with the high efficiency of <f>γ</f>-encoded coherence transfer. The efficiency and robustness of <f>i</f>DCP toward isotropic chemical shift variations and chemical shift anisotropies, in the order typically applying for the backbone atoms in uniformly 13C,15N-labeled proteins, is demonstrated numerically and experimentally by 15N to 13C coherence transfer for 15N-labeled N-Ac-l-valyl-l-leucine and 13C,15N-labeled-l-threonine. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00092614
- Volume :
- 382
- Issue :
- 5/6
- Database :
- Academic Search Index
- Journal :
- Chemical Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 11537231
- Full Text :
- https://doi.org/10.1016/j.cplett.2003.10.120