The poly-saccharide having extensively branched and more compactly coiled concentrically glucose molecules is

This is the main storage poly saccharide in animals. Hence, it is commonly called animalstarch. Blue-green algae and fungi also store glycogen as fuel reserve. Like those of amylopectin, glycogen molecules are also large and highly branched (branch points are a, 1—6 linkages) polymers of thousands of D-glucose residues linked by a, 1-4 glycosidic bonds . In comparison to amylopectin molecules, however, glycogen molecules are much larger, more extensively branched and more compactly coiled concentrically.