Illustrated Glossary of Organic Chemistry

Glycogen: The main structure for glucose storage in animal and fungi. Consists of a protein core surrounded in three-dimensions by glucose polysaccharide chains. The entire structure may contain up to 30,000 glucose molecules.

Schematic cross-section illustration of the glycogen structure. The glucose polysaccharide chains are shown in brown. The protein structure is at the core. Note its similarity to a micelle.