Chemicals and Drugs

Phosphorylase a

The active form of GLYCOGEN PHOSPHORYLASE that is derived from the phosphorylation of PHOSPHORYLASE B. Phosphorylase a is deactivated via hydrolysis of phosphoserine by PHOSPHORYLASE PHOSPHATASE to form PHOSPHORYLASE B.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The active form of GLYCOGEN PHOSPHORYLASE that is derived from the phosphorylation of PHOSPHORYLASE B. Phosphorylase a is deactivated via hydrolysis of phosphoserine by PHOSPHORYLASE PHOSPHATASE to form PHOSPHORYLASE B.

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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

91(79); was see under GLYCOGEN PHOSPHORYLASE 1979-90; was see GLYCOGEN PHOSPHORYLASE 1975-78

MeSH Record

Previous Indexing

  • Glucosyltransferases (1966-1970)
  • Glycogen Phosphorylase (1971-1978)

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References

  1. National Library of Medicine. Phosphorylase a. Medical Subject Headings (MeSH). 2026. Unique ID D010762. http://id.nlm.nih.gov/mesh/2026/D010762
  2. Phosphorylase a. In: Wikidata. https://www.wikidata.org/wiki/Q76507211