IgM immunoglobulin complex, circulating

Term ID

GO:0071754

Synonyms

• IgM antibody

Definition

A polymer of five or six IgM core units each composed of two identical immunoglobulin heavy chains of the IgM isotype and two identical immunoglobulin light chains, held together by disulfide bonds; the individual IgM core units are held together via disulfide bonds with a single J chain polypeptide acting as a bridge between two of the polymeric units. Circulating IgM is present in the extracellular space, in mucosal areas or other tissues, or in the blood or lymph. (2)

References

Ontology

GO: Cellular Component    QuickGO    AmiGO