Document Type
Article
Publication Title
Journal of Molecular Biology
Publication Date
4-5-1982
Volume
156
Issue
2
Disciplines
Biology | Life Sciences
Abstract
The structure of the glucose heptamer, maltoheptaose, has been determined by difference Fourier analysis at 0.25 nm resolution through its binding to phosphorylase a. It is a left-handed helical structure, with 6.5 glucose residues per turn and a rise per residue of 2.4 Å. The molecule shows short-range order when no protein is present to stabilize its conformation in solution. With one exception, the individual torsion angles between sugar residues vary over a narrow range and preserve a good O(2)O(3′) hydrogen bond. The length of an individual chain for glycogen can be extrapolated from the maltoheptaose data and agrees well with the size for glycogen predicted by the Whelan model.
DOI
https://doi.org/10.1016/0022-2836(82)90336-9
Rights
© 1982 Academic Press Inc. (London) Ltd.
Recommended Citation
Goldsmith, E.; Sprang, S.; and Fletterick, R., "Structure of maltoheptaose by difference Fourier methods and a model for glycogen" (1982). Biological Sciences Faculty Publications. 562.
https://scholarworks.umt.edu/biosci_pubs/562