Chemicals and Drugs

Complement C4b-Binding Protein

A serum protein that regulates the CLASSICAL COMPLEMENT ACTIVATION PATHWAY. It binds as a cofactor to COMPLEMENT FACTOR I which then hydrolyzes the COMPLEMENT C4B in the CLASSICAL PATHWAY C3 CONVERTASE (C4bC2a).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A serum protein that regulates the CLASSICAL COMPLEMENT ACTIVATION PATHWAY. It binds as a cofactor to COMPLEMENT FACTOR I which then hydrolyzes the COMPLEMENT C4B in the CLASSICAL PATHWAY C3 CONVERTASE (C4bC2a).

MeSH Record

Classification

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

16 entry terms
  • C4b-Binding Protein
  • C4b-C3b Inactivator Cofactor
  • C4bC3bINA-Cofactor
  • Complement 4b Binding Protein
  • Complement C3b-C4b Inactivator Cofactor
  • Complement Component 4b-Binding Protein
  • C4b Binding Protein
  • C4b C3b Inactivator Cofactor
  • C4b-Binding Protein, Complement
  • C4bC3bINA Cofactor
  • Cofactor, C4b-C3b Inactivator
  • Complement C3b C4b Inactivator Cofactor
  • Complement C4b Binding Protein
  • Complement Component 4b Binding Protein
  • Protein, C4b-Binding
  • Protein, Complement C4b-Binding

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

MeSH Record

Previous Indexing

  • Complement Inactivator Proteins (1981-2005)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Complement C4b-Binding Protein. Medical Subject Headings (MeSH). 2026. Unique ID D050716. http://id.nlm.nih.gov/mesh/2026/D050716
  2. Complement C4b-Binding Protein. In: Wikipedia. https://en.wikipedia.org/wiki/C4b-binding_protein
  3. Complement C4b-Binding Protein. In: Wikidata. https://www.wikidata.org/wiki/Q5008230