31. One of the main forms of control is the varied phosphorylation of glycogen synthase and glycogen phosphorylase . 32. Glycogen phosphorylase is also studied as a model protein regulated by both reversible phosphorylation and allosteric effects. 33. Glycogen phosphorylase can act only on linear chains of glycogen ( ?1-4 glycosidic linkage ). 34. R and T States of Glycogen Phosphorylase b Tower Helices, on the left and right respectively. 35. Just prior to the root hair cell development, there is a point of elevated phosphorylase activity. 36. Glycogen debranching enzymes assist phosphorylase , the primary enzyme involved in glycogen breakdown, mobilize glycogen stores. 37. Thymidine phosphorylase has also been found to play a dual role in both cancer development and therapy. 38. Tipiracil helps maintain the blood concentration of trifluridine by inhibiting the enzyme thymidine phosphorylase which metabolizes trifluridine. 39. As a glycogen phosphorylase , GPBB catalyzes the phosphorolysis of glycogen to yield glucose 1-phosphate. 40. This leads to phosphorylase kinase and glycogen phosphorylase's becoming inactive, while glycogen synthase is activated.
