title: Idiotypic analysis of anti-GAT antibodies. VIII. Comparison of interstrain and allotype-associated idiotypic specificities.
abstract: A guinea pig anti-idiotypic antiserum made against pooled specifically purified A/J anti-GAT antibodies was characterized. This antiserum contains anti-idiotypic antibodies specific to interspecies, interstrain, and allotype-linked idiotypic determinants. These idiotypic determinants are associated with the combining sites of idiotypic antibodies that are induced by GT-related but not GA-related antigenic moieties. Genetic and strain distribution studies indicated that the shared allotype-linked idiotypic determinants are controlled by Igh-1e- or Igh-1b-linked genes. The interrelationships of the allotype-linked and interstrain CGAT idiotypic specificities are described using monoclonal anti-GAT hybridoma antibodies. Four of 7 hybridoma anti-GAT antibodies of C57BL/6 origin expressed a major fraction of the idiotypic specificities of A/J anti-GAT antibodies. These 4 hybridoma antibodies also carried the common interstrain idiotype, termed CGAT, but not all CGAT-bearing anti-GAT hybridoma antibodies expressed the allotype-linked idiotypic specificities. The Ig-1b-positive, F17-167.1 hybridoma anti-GAT antibody was used as a ligand to selectively identify the major allotype-linked idiotypic specificities, which were designated Gte idiotype.
mesh_terms: D000818:Animals; D000906:Antibodies; D001666:Binding Sites, Antibody; D000939:Epitopes; D006168:Guinea Pigs; D006822:Hybrid Cells / Q000276:immunology; D007126:Immunoglobulin Allotypes; D007130:Immunoglobulin Idiotypes; D051379:Mice; D008805:Mice, Inbred A; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D009842:Oligopeptides / Q000276:immunology*; D011817:Rabbits; D013045:Species Specificity
chemical_list: D000906:Antibodies; D000939:Epitopes; D007126:Immunoglobulin Allotypes; D007130:Immunoglobulin Idiotypes; D009842:Oligopeptides