Chemicals and Drugs

Uroporphyrinogen Decarboxylase

An enzyme that catalyzes the decarboxylation of UROPORPHYRINOGEN III to coproporphyrinogen III by the conversion of four acetate groups to four methyl groups. It is the fifth enzyme in the 8-enzyme biosynthetic pathway of HEME. Several forms of cutaneous PORPHYRIAS are results of this enzyme deficiency as in PORPHYRIA CUTANEA TARDA; and HEPATOERYTHROPOIETIC PORPHYRIA.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An enzyme that catalyzes the decarboxylation of UROPORPHYRINOGEN III to coproporphyrinogen III by the conversion of four acetate groups to four methyl groups. It is the fifth enzyme in the 8-enzyme biosynthetic pathway of HEME. Several forms of cutaneous PORPHYRIAS are results of this enzyme deficiency as in PORPHYRIA CUTANEA TARDA; and HEPATOERYTHROPOIETIC PORPHYRIA.

MeSH Record

Classification

Broader headings

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MeSH Record

Synonyms

6 entry terms
  • Uroporphyrinogen Carboxy-Lyase
  • Uroporphyrinogen III Decarboxylase
  • Carboxy-Lyase, Uroporphyrinogen
  • Decarboxylase, Uroporphyrinogen
  • Decarboxylase, Uroporphyrinogen III
  • Uroporphyrinogen Carboxy Lyase

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

Indexing Annotation

/defic permitted but consider also PORPHYRIA CUTANEA TARDA and HEPATOERYTHROPOIETIC PORPHYRIA

MeSH Record

History Note

91(76); was see under CARBOXY-LYASES 1976-90

MeSH Record

Previous Indexing

  • Carboxy-Lyases (1974-1975)
  • Porphyrinogens (1975)
  • Porphyrins (1974)

MeSH Hierarchy

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AMA Style

References

  1. National Library of Medicine. Uroporphyrinogen Decarboxylase. Medical Subject Headings (MeSH). 2026. Unique ID D014575. http://id.nlm.nih.gov/mesh/2026/D014575
  2. Uroporphyrinogen Decarboxylase. In: Wikidata. https://www.wikidata.org/wiki/Q24769641