11. The defect is a type of purine nucleoside phosphorylase deficiency with inactive phosphorylase. 12. The defect is a type of purine nucleoside phosphorylase deficiency with inactive phosphorylase . 13. The most ancient polyadenylating enzyme is polynucleotide phosphorylase . 14. This enzyme was later renamed liver phosphorylase phosphatase. 15. This amplifies the effect of activating glycogen phosphorylase . 16. This activates glycogen phosphorylase and inhibits glycogen synthase. 17. The increased calcium availability binds to the calmodulin subunit and activates glycogen phosphorylase kinase. 18. Together with phosphorylase , glycogen debranching enzymes function in glycogen breakdown and glucose mobilization. 19. The product of this cleavage, maltotetraose, is further degraded by maltodextrin phosphorylase . 20. Tipiracil causes area under the curve 37-fold, by inhibiting thymidine phosphorylase .
