Glycogen is a branched homopolysaccharide that serves as the storage form of glucose in animal cells. It is mainly stored in liver cells and muscle cells in small quantities, and is also found in brain and kidney. Glycogen has an alpha glucose structure linked by alpha 1->4 and alpha 1->6 glycosidic bonds that is similar to but more heavily branched than starch. It functions to store excess glucose from the bloodstream and release glucose monomers into cells when energy is needed.

1. HOMOPOLYSACCHARIDE
GLYCOGEN
Shruthi shree gandhi.s
I MSC.BIOCHEMISTRY

2. GLYCOGEN
OCCURANCE
⚫Storage carbohydrate found in animal cells.
⚫Glycogen is mainly stored in liver cells abundantly
and in small quantities in muscle cells.
⚫Glycogen is also found in small quantities in brain and
kidney for immediate use.
⚫Diabetes is the most common disease associated with
abnormal glycogen metabolism.

3. STRUCTURE
⚫Glycogen is a branched homo polysaccharide.
⚫It is made up of alpha glucose molecule monomers
linked via alpha (1->4) and alpha (1->6) glycosidic
bonds.
⚫Structure of glycogen is similar to that of the starch.
⚫But glycogen contains more alpha(1->6)glycosidic
linkages than starch.
⚫Hence glycogen is more or heavily branched than
starch.

4. STRUCTURE

5. BIOLOGICAL FUNCTIONS
⚫Excess Glucose is stored in the form of glycogen.
⚫When the body is deprived of energy glycogen is
broken down in to glucose monomers and is utilised
by the cells.

6. Thank you