Chemicals and Drugs

Starch Phosphorylase

An enzyme of the PHOSPHORYLASES family that catalyzes the degradation of starch, a mixture of unbranched AMYLOSE and branched AMYLOPECTIN compounds. This phosphorylase from plants is the counterpart of GLYCOGEN PHOSPHORYLASE in animals that catalyzes the reaction of inorganic phosphate on the terminal alpha-1,4-glycosidic bond at the non-reducing end of glucans resulting in the release of glucose-1-phosphate.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An enzyme of the PHOSPHORYLASES family that catalyzes the degradation of starch, a mixture of unbranched AMYLOSE and branched AMYLOPECTIN compounds. This phosphorylase from plants is the counterpart of GLYCOGEN PHOSPHORYLASE in animals that catalyzes the reaction of inorganic phosphate on the terminal alpha-1,4-glycosidic bond at the non-reducing end of glucans resulting in the release of glucose-1-phosphate.

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Synonyms

6 entry terms
  • Amylophosphorylase
  • Phosphorylase, Starch
  • Starch Phosphorylase a
  • Starch Phosphorylase b
  • Phosphorylase a, Starch
  • Phosphorylase b, Starch

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

MeSH Record

History Note

2002

MeSH Record

Previous Indexing

  • Glucosyltransferases (1964-1972)
  • Phosphorylases (1973-2001)

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References

  1. National Library of Medicine. Starch Phosphorylase. Medical Subject Headings (MeSH). 2026. Unique ID D024941. http://id.nlm.nih.gov/mesh/2026/D024941
  2. Starch Phosphorylase. In: Wikipedia. https://en.wikipedia.org/wiki/Starch_phosphorylase
  3. Starch Phosphorylase. In: Wikidata. https://www.wikidata.org/wiki/Q7601516