title: Studies on Xenopus immunoglobulins using monoclonal antibodies.
abstract: Monoclonal antibodies raised against Xenopus Ig recognize antigenic determinants on IgM and low mol. wt Ig (LMW Ig or IgY ). On SDS-PAGE two forms of mu were distinguished in the supernatant and cell lysate of tunicamycin-treated spleen cell culture. The two bands of v observed in serum appear to be the result of carbohydrate heterogeneity. The light chains resolved into two distinct bands which differed in peptide maps; the more slowly migrating band of light chain was preferentially associated with v. Patterns of cross-reactivity between the immunoglobulins of 11 species of Xenopus and three subspecies of Xenopus laevis were obtained; the polymorphism of mu and v antigenic determinants and its implications for species divergence are discussed.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology; D003429:Cross Reactions; D004591:Electrophoresis, Polyacrylamide Gel; D000939:Epitopes / Q000032:analysis*; D007147:Immunoglobulin Light Chains / Q000276:immunology; D007075:Immunoglobulin M / Q000276:immunology*; D007136:Immunoglobulins / Q000276:immunology*; D010446:Peptide Fragments / Q000032:analysis; D013045:Species Specificity; D013205:Staphylococcal Protein A / Q000276:immunology; D014981:Xenopus / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; C016512:IgY; D007147:Immunoglobulin Light Chains; D007075:Immunoglobulin M; D007136:Immunoglobulins; D010446:Peptide Fragments; D013205:Staphylococcal Protein A