phosphorylase(redirected from P enzyme)
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an enzyme that, in the presence of inorganic phosphate, catalyzes the conversion of glycogen into glucose-1-phosphate.
An enzyme cleaving poly(1,4-α-d-glucosyl)n with orthophosphate to form poly(1,4-α-d-glucosyl)n-1 and α-d-glucose 1-phosphate. The active form of the enzyme is a phosphorylated protein.
1. any of a group of enzymes that catalyze the phosphorolysis of glycosides, transferring the cleaved glycosyl group to inorganic phosphate. When not qualified with the substrate name, the term usually denotes glycogen phosphorylase (animals) or starch phosphorylase (plants).
2. any of a group of enzymes that catalyze the transfer of a phosphate group to an organic acceptor.
Any of a class of enzymes that catalyze the attachment of a phosphate group to another molecule.
Etymology: Gk, phosphoros, bringer of light + ase, enzyme suffix
any of a group of physiologically important enzymes that catalyze reactions between phosphates and glycogen or other starch components, yielding glucose-1-phosphate.
A phosphorylated enzyme cleaving poly(1,4-α-d-glucosyl)n with inorganic phosphate to form poly(1,4-α- d-glucosyl)n-1 and α-d-glucose 1-phosphate.
a key regulatory enzyme that, in the presence of inorganic phosphate, catalyzes the removal of one glucose unit from glycogen to glucose-1-phosphate.
see ornithine carbamoyl transferase.
an enzyme that activates phosphorylase by catalyzing the phosphorylation of serine. See also kinase.