Protein:Immunoglobulin J chain

Gene:JCHAIN

Organism:Homo sapiens (Human)

Serves to link two monomer units of either IgM or IgA. In the case of IgM, the J chain-joined dimer is a nucleating unit for the IgM pentamer, and in the case of IgA it induces larger polymers. It also help to bind these immunoglobulins to secretory component.(P01591 )