Complement C4 Products

Complement C4 Antibody (A24-T ...
Complement C4 Antibody (A24-T)
Species: Hu
Applications: IHC, IHC-P
Host: Rabbit Monoclonal
Mouse Complement C4 ELISA Kit ...
Mouse Complement C4 ELISA Kit (Col...
Species: Mu
Applications: ELISA
Human Complement C4 ELISA Kit ...
Human Complement C4 ELISA Kit (Col...
Species: Hu
Applications: ELISA
Rat Complement C4 ELISA Kit ( ...
Rat Complement C4 ELISA Kit (Color...
Species: Rt
Applications: ELISA


C4 consists of three polypeptide chains (alpha, molecular weight 95 kDa, beta, molecular weight 75 kDa and gamma, molecular weight 33 kDa) and is usually present in serum at 200-600mg/L. It is a protein of the classical complement pathway. When activated by C1s, a peptide C4a is released and the generated C4b binds C2 which is in turn cleaved by C1s to produce the classical pathway C3 convertase, namely C4b2a. C4b also has opsonin activity and binds to macrophages and neutrophils via their CR1 receptor.


Entrez Human
Uniprot Human
Product By Gene ID 720
Alternate Names
  • C4
  • RG
  • C3 and PZP-like alpha-2-macroglobulin domain-containing protein 2
  • complement component 4A (Rodgers blood group)

Research Areas for Complement C4

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Innate Immunity

Bioinformatics Tool for Complement C4

Discover related pathways, diseases and genes to Complement C4. Need help? Read the Bioinformatics Tool Guide for instructions on using this tool.
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