phosphorylase phosphatase

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• (phosphorylase) phosphatase — In enzymology, a [phosphorylase] phosphatase (EC number|3.1.3.17) is an enzyme that catalyzes the chemical reaction: [phosphorylase a] + 4 H2O ightleftharpoons 2 [phosphorylase b] + 4 phosphateThus, the two substrates of this enzyme are… …   Wikipedia

• [phosphorylase] phosphatase — [phos·phor·y·lase] phos·pha·tase (fos forґə lās fosґfə tās″) [EC 3.1.3.17] an enzyme of the hydrolase class that catalyzes the cleavage of a phosphoryl group from (active) glycogen phosphorylase a to form (inactive)… …   Medical dictionary

• Phosphorylase — is a family of allosteric enzymes that catalyze the production of glucose 1 phosphate from a polyglucose such as glycogen, starch or maltodextrin.FunctionMore generally, phosphorylases are enzymes that catalyze the addition of a phosphate group… …   Wikipedia

• Phosphatase — Phosphatasen Enzymklassifikationen EC, Kategorie …   Deutsch Wikipedia

• Phosphorylase — Dieser Artikel oder Abschnitt bedarf einer Überarbeitung. Hilf mit, ihn zu verbessern, und entferne anschließend diese Markierung. Als Phosphorylasen bezeichnet man eine Familie allosterischer Enzyme, welche die Produktion von Glukose 1 Phosphat… …   Deutsch Wikipedia

• phosphorylase — A phosphorylated 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. SYN: α glucan p., glycogen p., P enzyme, p. a, polyphosphorylase. p. a SYN: p.. p. b dephosphorylated p. a …   Medical dictionary

• Phosphatase — A phosphatase is an enzyme that removes a phosphate group from its substrate by hydrolysing phosphoric acid monoesters into a phosphate ion and a molecule with a free hydroxyl group (see dephosphorylation). This action is directly opposite to… …   Wikipedia

• protein phosphatase 1 — a specific phosphoprotein phosphatase (q.v.) that catalyzes the dephosphorylation of several enzymes involved in the regulation of glycogen metabolism: phosphorylase kinase, glycogen phosphorylase a, and glycogen synthase b. The enzyme activity… …   Medical dictionary

• glycogen phosphorylase — gly·co·gen phos·phor·y·lase (gliґko jən fos forґə lās) [EC 2.4.1.1] an enzyme of the transferase class that catalyzes the phosphorolysis of a terminal α 1,4 glycosidic bond at the non reducing end of a glycogen molecule,… …   Medical dictionary

• Glycogen phosphorylase — Phosphorylase The crystal structure of the rabit muscle glycogen phosphorylase AMP complex. AMP allosteric site (yellow), phosporylated Ser14 (orange), glycogen binding site (blue), catalytic site (red).[1] …   Wikipedia

• Phosphoprotein phosphatase — is an enzyme which dephosphorylates certain phosphorylated proteins.Overview of control of enzyme activityThe control of enzyme activity involves covalent modifications, including the addition of phosphate ions to serine, threonine and tyrosine… …   Wikipedia