Chemicals and Drugs

Complement C9

A 63-kDa serum glycoprotein encoded by gene C9. Monomeric C9 (mC9) binds the C5b-8 complex to form C5b-9 which catalyzes the polymerization of C9 forming C5b-p9 (MEMBRANE ATTACK COMPLEX) and transmembrane channels leading to lysis of the target cell. Patients with C9 deficiency suffer from recurrent bacterial infections.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A 63-kDa serum glycoprotein encoded by gene C9. Monomeric C9 (mC9) binds the C5b-8 complex to form C5b-9 which catalyzes the polymerization of C9 forming C5b-p9 (MEMBRANE ATTACK COMPLEX) and transmembrane channels leading to lysis of the target cell. Patients with C9 deficiency suffer from recurrent bacterial infections.

MeSH Record

Classification

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

6 entry terms
  • C9 Complement
  • Complement 9
  • Complement Component 9
  • C9, Complement
  • Complement, C9
  • Component 9, Complement

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)
  • specific cell

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Complement C9. Medical Subject Headings (MeSH). 2026. Unique ID D003186. http://id.nlm.nih.gov/mesh/2026/D003186
  2. Complement C9. In: Wikipedia. https://en.wikipedia.org/wiki/Complement_component_9
  3. Complement C9. In: Wikidata. https://www.wikidata.org/wiki/Q21102471