Influence of cross-correlation between dipolar and chemical shift anisotropy relaxation mechanisms upon the transverse relaxation rates of 15N in macromolecules

Boyd , Jonathan and Hommel , Ulrich and Krishnan, VV (1991) Influence of cross-correlation between dipolar and chemical shift anisotropy relaxation mechanisms upon the transverse relaxation rates of 15N in macromolecules. In: Chemical Physics Letters, 187 (3). pp. 317-324.

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Abstract

Heteronuclear multiple-quantum coherence relaxation rate are calculated for the individual transitions of the S spin in an AIS nuclear spin system assuming that the heteronucleus (S spin) has relaxation contributions from both intramolecular dipole-dipole and chemical shift anisotropy relaxation. The individual multiplet components of the heteronuclear zero- and double-quantum coherences are shown to have different transverse relaxation rates. The cross-correlation between the two relaxation mechanisms is shown to be the dominant cause of the calculated differential line broadening. Experimental data are presented using as an example a uniformly 15N labelled sample of human epidermal growth factor.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	Nuclear Magnetic-Resonance;Nmr-Spectroscopy;Secondary Structure;Coupling-Constants;L-Alanine;Assignment;Protein; Tensors;C-13;Polypeptides.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Nov 2010 10:28
Last Modified:	18 Nov 2010 10:28
URI:	http://eprints.iisc.ernet.in/id/eprint/33884

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