| Literature DB >> 10677827 |
C Richter1, C Griesinger, I Felli, P T Cole, G Varani, H Schwalbe.
Abstract
A new experiment, the forward directed quantitative gamma-HCCH-TOCSY for the measurement of the conformation of the five-membered ribosyl unit in RNA oligonucleotides, is presented. The experiment relies on quantification of cross peak intensities caused by evolution of CH, CH-dipole-dipole cross correlated relaxation in non-evolution periods and the resolution enhancement obtainable in forward directed HCC-TOCSY transfer. Cross correlated relaxation rates are interpreted to reveal the sugar conformation of 22 out of 25 nucleotides in an isotopically labelled 25-mer RNA. The results obtained with this new method are in agreement with the conformational analysis derived from 3J(H,H) coupling constants.Entities:
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Year: 1999 PMID: 10677827 DOI: 10.1023/a:1008319130714
Source DB: PubMed Journal: J Biomol NMR ISSN: 0925-2738 Impact factor: 2.835