NCIt synonyms : Rodgers Form of C4; C3 and PZP-Like Alpha-2-Macroglobulin Domain-Containing Protein 2; Acidic C4; Complement Component 4S; Acidic Complement C4; Complement Component 4A; C4A;
NCIt definition : Complement C4-A (1744 aa, 193 kDa) is encoded by the human C4A gene. This protein
plays a role in both host defense and inflammation.;
NCIt note : Complement C4-A and Complement C4-B differ by 4 amino acids at positions 1101-1106;
C4A has the sequence PCPVLD, while C4B has the sequence LSPVIH. (OMIM); Complement C4-A is cleaved into the following 6 chains: complement C4 beta chain,
complement C4-A alpha chain, C4a anaphylatoxin, C4b-A, C4d-A, and complement C4 gamma
chain. (UniProt);