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Carbohydr Res. 1991 Nov 11;220:1-9.

Assignment of the 1H chemical shifts of glycogen.

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  • 1Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06510.

Abstract

Assignments of nearly all the 1H chemical shifts of glycogen are made by 2-D 1H-1H homonuclear and 13C-1H heteronuclear COSY. We demonstrated that it is possible to obtain well-resolved 2-D n.m.r. spectra for a large molecule like glycogen. The seven nonequivalent protons of the glucose residues in the alpha-(1----4)-linked chains, and of those at the nonreducing ends, were completely assigned. Distinct chemical shifts for H-1 and H-2 immediately adjacent to the alpha-(1----6) bonds at the branch points were also determined. Several modifications of previous 13C chemical shift assignments were made from the heteronuclear 2-D n.m.r. data.

PMID:
1667378
[PubMed - indexed for MEDLINE]

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