Measurement of small scalar and resiudal dipolar couplings in purine and pyrimidine bases
Autoři | |
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Rok publikování | 2001 |
Druh | Článek v odborném periodiku |
Časopis / Zdroj | Journal of Biomolecular NMR |
Fakulta / Pracoviště MU | |
Citace | |
Obor | Fyzikální chemie a teoretická chemie |
Klíčová slova | NMR methods; nucleic acid bases; residual dipolar couplings; spin-state-selective filter |
Popis | A suite of spin-state-selective excitation (S3E) NMR experiments for the measurements of small one-bond (13C - 13C, 13C - 15N) and two-bond (1H - 13C, 1H - 15N) coupling constants in 13C, 15N labeled purine and pyrimidine bases is presented. The incorporation of band-selective shaped pulses, elimination of the cross talk between á and â sub-spectra, and accuracy and precision of the proposed approach are discussed. Merits of using S3 E rather than á/â-half-filter are demonstrated using results obtained on isotopicaly labeled DNA oligonucleotides. |
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