The synthesis of new glycogen molecules are initiated by the homodimeric protein, _________, that catalyzes the addition of 8 gl
ucose molecules to a tyronyl residue in the protein. Thus, glycogen molecules are actually a type of glycosylated protein a) Glucogenin
b) Glycogenin
c) Amylogenin
d) Glycogen synthase
e) Branching enzyme
Glycogenin is a small pre - existing fragment glycogen , that acts as a primer or gycogenin to start the process of glycogen synthesis .
The Glycogenin accept the glucose from the UDP -Glc .
The Glycogenin has a tyrosine amino acid group , which have a hydroxyl group , on which the glucose unit is attached .
The first molecules of Glucose to Glycogenin is transfered by the nezyme Glycogen initiator synthase .
Then ,
<u>The Glycogenin take the remaining residue of glucose to form a primer fragment which acts as a the acceptor of the remaining glucose molecules .</u>
