title: Human hybrid immunoglobulin M containing immunoglobulin A.
abstract: Some hybridoma clones made by fusion of a human lymphoblastoid cell line, HO323 with human B lymphocytes, secreted not only IgA but also IgM-like immunoglobulin molecules. The IgM-like immunoglobulin had a molecular size of 900 K which corresponded to that of IgM. Immunochemical analyses revealed that the IgM-like immunoglobulin contained two monomeric IgA and three monomeric IgM molecules. In the IgA moieties, half of original light chains were replaced with kappa chains derived from the IgM, and vice versa.
mesh_terms: D002460:Cell Line; D055598:Chemical Phenomena; D002621:Chemistry; D002850:Chromatography, Gel; D004220:Disulfides; D004797:Enzyme-Linked Immunosorbent Assay; D006801:Humans; D006825:Hybridomas / Q000276:immunology*; D007070:Immunoglobulin A / Q000032:analysis; D007143:Immunoglobulin Heavy Chains / Q000032:analysis; D007147:Immunoglobulin Light Chains / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D046911:Macromolecular Substances; D008623:Mercaptoethanol; D008970:Molecular Weight; D010084:Oxidation-Reduction
chemical_list: D004220:Disulfides; D007070:Immunoglobulin A; D007143:Immunoglobulin Heavy Chains; D007147:Immunoglobulin Light Chains; D007075:Immunoglobulin M; D046911:Macromolecular Substances; D008623:Mercaptoethanol