Glycogen molecules exist in cytoplasmic granules that contain the enzymes for synthesis and degradation of glycogen.ĭiet Glycogen gluconeogenesis Source of Blood glucose Glycogen metabolism Glucose is the main source of energy for brain, cells without mitochondria (RBC) and essential source of energy for exercising muscles because it substrate for anaerobic glycolysis 1) Dietary intake of glucose or glucose precursors as starch, monosaccharides (Fructose), disaccharides (Sucrose, maltose, lactose) 2) Glycogen: provide a rapid supply for glucose in the absence of dietary glucose. After every 8-10 glucose residues there is a branch containing α-1,6 linkage.
Structure of glycogen * Glycogen: branched-chain homopolysaccharide made of α-D-glucose linked by α-1,4 linkage.
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