View source for Glycogen

Glycogen is a branched [[Polysaccharide|polysaccharide]] used&nbsp;as a readily&nbsp;available storage of [[Glucose|glucose]]&nbsp;largely found in [[Liver|liver]] and [[Muscle|muscle]] cells.&nbsp; It consists of a chain of alpha [[Glucose|glucose]]&nbsp;molecules joined together mostly by 1-4 glycosidic bonds but 1-6 glycosidic linkages are also present approximately every 10 [[Glucose|glucose]] residues, these 1-6&nbsp;linkages form the 'branches'&nbsp;<ref>Berg J., Tymoczko J. and Stryer L. (2007) Biochemistry, 6th edition, New York: WH Freeman. Page 592</ref>.

The glycogen store in [[Muscle|muscle]] is released for [[Muscle|muscle]] cells, whereas the glycogen released by liver cells is released for other [[Cell|cells]]. Glycogen is broken and used when cells require more [[ATP|ATP]] than they can produce from the bloodstream&nbsp;<ref>Alberts B., Johnson A., Lewis J., Raff M., Roberts K. and Walter P. (2008) Molecular Biology of the cell, 5th edition, New York: Garland Science.</ref>.<br> 

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