Synthesis Background
	Glycogen synthesis is the biochemical pathway that 
converts glucose molecules into the energy storage molecule of 
glycogen through a series of three steps.
    1)  ADP glucose pyrophosporylase acts as a catalyst between 
    a-glucosyl-1-P and adenosine triphosphate to produce 
    ADP-glucose and inorganic phosphate.
    2)  Starch Synthase is the enzyme for reacting the ADP 
    glucose from the ADP Glc PPase (#1) reaction with a glucan 
    chain to produce adenosine diphosphate and a glucan chain 
    with an additional a-glucose attached.
    3)  The Branching Enzyme rearranges the a-1,4 linkages into 
    a-1,6 glucosyl linkages.
The extent of branching shows the activity of the branching 
enzyme.