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Journal/Book: Journal of Biomolecular NMR
Published: 1998
Pages: 223 - 230
Volume: 12
Issue: 2
Accession no.: 30

A New Experiment for the Measurement of nJ(C,P) Coupling Constants Including 3J(C4′i,Pi) and 3J(C4′i,Pi+1) in Oligonucleotides

Christian Richter, Bernd Reif, Wörner, Karlheinz, Quant, Stefanie, Marino, John P., Joachim W Engels, Christian Griesinger, Harald Schwalbe
A new experiment for the measurement of nJ(C,P) coupling constants along the phosphodiester backbone in RNA and DNA based on a quantitative-J HCP experiment is presented. In addition to coupling constants, in which a carbon atom couples to only one phosphorus atom, both the intraresidual 3J(C4'i,Pi) and the sequential 3J(C4'i,Pi+1) for the C4' resonances that couple to two phosphorus atoms can be obtained. Coupling constants obtained by this new method are compared to values obtained from the P-FIDS experiment. Together with 3J(H,P) coupling constants measured using the P-FIDS experiment, the backbone angles ß and ? can be determined.
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Prof. Dr. Harald Schwalbe
Institut für Organische Chemie und Chemische Biologie
Johann Wolfgang Goethe Universität
Max-von-Laue-Str. 7
D-60438 Frankfurt am Main
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