Immunoglobulin J Chain, JCHAIN, IGCJ, IGJ, IGJ_HUMAN, Immunoglobulin J polypeptide linker protein for immunoglobulin alpha and mu polypeptides, immunoglobulin joining chain, JCH, Joining chain of multimeric IgA and IgM.
Enables IgA binding activity and protein homodimerization activity. Contributes to several functions, including immunoglobulin receptor binding activity, peptidoglycan binding activity, and phosphatidylcholine binding activity. Involved in several proces