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Article

Improved accuracy of 15N-1H scalar and residual dipolar couplings from gradient-enhanced IPAP-HSQC experiments on protonated proteins.

Journal of biomolecular NMR - 1 Mar 2009

Yao Lishan, Ying Jinfa, Bax Ad

Abstract excerpt

The presence of dipole-dipole cross-correlated relaxation as well as unresolved E.COSY effects adversely impacts the accuracy of (1)J(NH) splittings measured from gradient-enhanced IPAP-HSQC spectra. For isotropic samples, the size of the systematic errors caused by these effects depends on the values of (2)J(NHalpha), (3)J(NHbeta) and (3)J(HNHalpha). Insertion of band-selective (1)H decoupling pulses in the...

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PMID: 19205898
DOI: 10.1007/s10858-009-9299-x
PMCID: PMC2753394

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