Water binding by glycogen molecules.
Low temperature NMR spectra have been obtained of the water bound to glycogen. These data have allowed the evaluation of the amount of water bound and the energy and entropy associated with this bonding. High molecular weight glycogen (approx. 1 - 10(9)) exhibits water binding properties analogous to those previously found for other glycoproteins. Low molecular weight glycogen (approx. 1 - 10(7)), however, shows anomalous binding characteristics, with large amounts of associated "non-freezing" water. These findings are discussed in terms of previously proposed molecular architecture.
D000818:Animals; D008112:Liver Glycogen / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008970:Molecular Weight; D011817:Rabbits; D013816:Thermodynamics; D014867:Water / Q000378:metabolism*
D008112:Liver Glycogen; D014867:Water