Glycogen molecular structure

Maher, George G., The Methyl Ethers of the Aldopentoses and of Rhamnose and Fucose, X, 257-272 Maher, George G., The Methyl Ethers of D-Galactose, X, 273-282 Manners, D. J., The Molecular Structure of Glycogens, XII, 261-298 Marsh, C. A. See Conchie, J. McCloskey, ChesterM., Benzyl Ethers of Sugars, XII, 137-156 McColloch, R. J. See Kertesz, Z. I. McDonald, Emma J., The Polyfructo-... 

Orpin, C. G., Huskisson, N. S. Ward, P. F. V. (1976). Molecular structure and morphology of glycogen isolated from the cestode Moniezia expansa. Parasitology, 73 83-95. 

Fig. 3.1. Glucose and its two anomeric forms, which result from the formation of a ring on opening up of the carbonyl (—C=0) group. Note the several ways of drawing molecular structure. Maltose consists of two alpha-glucoses linked by a 1,4 bond, Amylose consists of a chain of such linkages. Glycogen, in addition, contains 1,6 links, which result in a branched structure. See Appendix 1, page 73, for further review of isomer terminology.

A third molecular structure for glycogen was postulated by Meyer in 1941 it was based on the methylation assay of glycogen and of the limit-... 

Fig. 1.— Molecular Structures for Glycogen (a) Haworth laminated form, (b) Staudinger comb form, and (c) Meyer tree form. Key —Linear chain of Qi-(1 — 4)-linked D-glucose residues J, Inter-chain linkage [1—>6-glucosidic in structures (a) and (c) 1 2, 1 — 3, and 1 6-glucosidic in (b)] A, B, and C are...

In general, little information on the absorption spectra of iodine complexes of glycogens of known molecular structure is available, and attempts to relate spectra with details of fine structure appear to be premature. 

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