C4b

C4b

complement component 4A (Rodgers blood group)
Identifiers
Symbol C4A
Entrez HUGO OMIM RefSeq UniProt Locus p21.3
complement component 4B (Childo blood group)
Identifiers
Symbol C4B
Entrez HUGO OMIM RefSeq UniProt Locus p21.3

Complement component 4 is a protein involved in the complement system.

It is cleaved into proteins 4a and 4b.

Clinical significance

It is responsible for the Chido Rodgers blood group system.[1]

C4d has been identified as a biomarker for systemic lupus erythematosus.[2]

References