Chemicals and Drugs

Complement C8

A 150-kDa serum glycoprotein composed of three subunits with each encoded by a different gene (C8A; C8B; and C8G). This heterotrimer contains a disulfide-linked C8alpha-C8gamma heterodimer and a noncovalently associated C8beta chain. C8 is the next component to bind the C5-7 complex forming C5b-8 that binds COMPLEMENT C9 and acts as a catalyst in the polymerization of C9.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A 150-kDa serum glycoprotein composed of three subunits with each encoded by a different gene (C8A; C8B; and C8G). This heterotrimer contains a disulfide-linked C8alpha-C8gamma heterodimer and a noncovalently associated C8beta chain. C8 is the next component to bind the C5-7 complex forming C5b-8 that binds COMPLEMENT C9 and acts as a catalyst in the polymerization of C9.

MeSH Record

Classification

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

12 entry terms
  • C8 Complement
  • Complement 8
  • Complement Component 8
  • C8, Complement
  • Complement, C8
  • Component 8, Complement
  • Complement Component C8 alpha
  • Complement Component C8 alpha Chain
  • Complement Component C8 beta
  • Complement Component C8 beta Chain
  • Complement Component C8 gamma
  • Complement Component C8 gamma Chain

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, biosynthesis, 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

2006 (1975)

MeSH Record

Previous Indexing

  • Bacteriolysis (1966-1974)
  • Complement (1968-1974)
  • Hemolysis (1966-1974)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Complement C8. Medical Subject Headings (MeSH). 2026. Unique ID D003185. http://id.nlm.nih.gov/mesh/2026/D003185
  2. Complement C8. In: Wikipedia. https://en.wikipedia.org/wiki/C8_complex
  3. Complement C8. In: Wikidata. https://www.wikidata.org/wiki/Q5008394