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Digitale Medien

NMR experiments for the sign determination of homonuclear scalar and residual dipolar couplings (2000)

Otting, Gottfried ; Rückert, Markus ; Levitt, Malcolm H. ; [weitere]

Springer

Journal of biomolecular NMR 16 (2000), S. 343-346

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ISSN: 1573-5001

Schlagwort(e): arginine repressor ; BPTI ; gramicidin S ; JHH-TOCSY ; sign of coupling constants ; signed COSY

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract A modified version of the JHH-TOCSY experiment, `signed COSY', is presented that allows the determination of the sign of residual dipolar 1H-1H coupling constants with respect to the sign of one-bond 1H-X coupling constants in linear three-spin systems X-1H-1H, where X = 13C or 15N. In contrast to the original JHH-TOCSY experiments, the signs of J HH couplings may be determined for CH2-CH2 moieties and for uniformly 13C/15N-labelled samples. In addition, sensitivity is enhanced, diagonal peaks are suppressed and cross peaks are observed only between directly coupled protons, as in a COSY spectrum.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1023/A:1008372630606

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