Chemicals and Drugs

Protoporphyrins

Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.

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Classification

Broader headings

Related Concepts

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MeSH Record

Aspects Covered

28 allowable subheadings

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

MeSH Record

Indexing Annotation

porphyrins

MeSH Record

History Note

91(75); was see under PORPHYRINS 1975-90

MeSH Record

Previous Indexing

  • Porphyrins (1968-1974)

MeSH Hierarchy

Tree Numbers

  1. D03w.383.129w.578.840w.500w.725w
  2. D03w.633.400.909w.500w.725w
  3. D04w.345w.783w.500w.725w
  4. D23.767w.727w.725w

AMA Style

References

  1. National Library of Medicine. Protoporphyrins. Medical Subject Headings (MeSH). 2026. Unique ID D011524. http://id.nlm.nih.gov/mesh/2026/D011524
  2. Protoporphyrins. In: Wikipedia. https://en.wikipedia.org/wiki/Protoporphyrin
  3. Protoporphyrins. In: Wikidata. https://www.wikidata.org/wiki/Q2424853