Everything about Phosphorylase totally explained
Phosphorylase is a family of
allosteric enzymes that
catalyze the production of
glucose-1-phosphate from a polyglucose such as
glycogen,
starch or
maltodextrin.
Function
More generally, phosphorylases are enzymes that catalyze the addition of a phosphate group from an inorganic phosphate (phosphate+hydrogen) to an acceptor. Do not confuse this enzyme with a
phosphatase or a
kinase. A phosphatase removes a phosphate group from a donor, while a kinase transfers a phosphate group from a donor (usually ATP) to an acceptor.
Types
The phosphorylases are named by prepending the name of the substrate, for example
glycogen phosphorylase,
starch phosphorylase,
maltodextrin phosphorylase.
All
known phosphorylases share catalytic and structural properties
(External Link
).
Activation
Phosphorylase a is the active form of glycogen phosphorylase that's derived from the phosphorylation of the inactive form,
phosphorylase b.
Pathology
Some disorders are related to phosphorylases:
Further Information
Get more info on 'Phosphorylase'.
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