(phosphorylase) phosphatase

(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 phosphate

Thus, the two substrates of this enzyme are [phosphorylase a] and H2O, whereas its two products are [phosphorylase b] and phosphate.

This enzyme belongs to the family of hydrolases, specifically those acting on phosphoric monoester bonds. The systematic name of this enzyme class is [phosphorylase a] phosphohydrolase. Other names in common use include PR-enzyme, phosphorylase a phosphatase, glycogen phosphorylase phosphatase, protein phosphatase C, and type 1 protein phosphatase.

References

*
*
*

External links

::"The CAS registry number for this enzyme class is CAS registry|9025-74-5."

Gene Ontology (GO) codes


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • [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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”