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6.2.3.1. Step 1. Action of phosphorylase
First step is catalyzed by phosphorylase. This enzyme is specific for the phosphorlytic breaking (phosphorolysis; of hydrolysis) or the 1-4 linkages of glycogen to yield glucose 1-phosphate. Phosphorylase Glycogen(C 6 )n + P i ↔ Glycogen (C 6) n-1 + Glucose 1- phosphate
The terminal glucosyl residues from the outermost chains of the glycogen molecule are removed sequentially until approximately four glucose residues remain on either side of a 1-6 branch. |
Last modified: Tuesday, 28 February 2012, 10:16 AM