| phosphorylases | 1. General term for enzymes transferring an inorganic phosphate group to some organic acceptor, hence belonging to the transferases. 2. Specifically, enzymes that release a single glucosyl residue from a polyglucose as d-glucose 1-phosphate, the phosphate coming from inorganic orthophosphate; e.g., phosphophorylase, sucrose phosphorylases, cellobiose phosphorylases. (05 Mar 2000) |
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| nucleoside phosphorylases | Enzymes that catalyze the phosphorolysis of a nucleoside, forming the free purine or pyrimidine plus ribose (or deoxyribose 1-phosphate); e.g., purine-nucleoside phosphorylases. (05 Mar 2000) |
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