Chemicals and Drugs

Complement C2

A component of the CLASSICAL COMPLEMENT PATHWAY. C2 is cleaved by activated COMPLEMENT C1S into COMPLEMENT C2B and COMPLEMENT C2A. C2a, the COOH-terminal fragment containing a SERINE PROTEASE, combines with COMPLEMENT C4B to form C4b2a (CLASSICAL PATHWAY C3 CONVERTASE) and subsequent C4b2a3b (CLASSICAL PATHWAY C5 CONVERTASE).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A component of the CLASSICAL COMPLEMENT PATHWAY. C2 is cleaved by activated COMPLEMENT C1S into COMPLEMENT C2B and COMPLEMENT C2A. C2a, the COOH-terminal fragment containing a SERINE PROTEASE, combines with COMPLEMENT C4B to form C4b2a (CLASSICAL PATHWAY C3 CONVERTASE) and subsequent C4b2a3b (CLASSICAL PATHWAY C5 CONVERTASE).

MeSH Record

Classification

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

6 entry terms
  • C2 Complement
  • Complement 2
  • Complement Component 2
  • C2, Complement
  • Complement, C2
  • Component 2, 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

  • Complement (1968-1974)
  • Magnesium (1966-1974)
  • Protein Binding (1966-1974)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Complement C2. Medical Subject Headings (MeSH). 2026. Unique ID D003175. http://id.nlm.nih.gov/mesh/2026/D003175
  2. Complement C2. In: Wikidata. https://www.wikidata.org/wiki/Q43921640