title: Light chain diversity of murine anti-streptococcal antibodies: IgCH-linked effects on L chain expression.
abstract: L chains derived from anti-group A streptococcal carbohydrate antibodies raised in A/J, BALB/cJ, C57BL/6J, CB-20, BAB-14, and CAL-20 mice were examined by isoelectric focusing. Multiple strain-associated differences in the degree and frequency of expression of particular L chain spectrotypes were observed. Analysis of L chain-focusing patterns in allotype-congenic mice revealed that IgCH-linked genes can have profound effects on the L chain phenotypes expressed by strains with identical L chain genotypes. Lastly, the overall spectrotypic diversity of L chains from anti-GAC antibodies appears to be less extensive than the diversity of the antibodies from which these L chains derive, documented by similar techniques. These results are interpreted in light of the significance of combinatorial diversity in generating antibody heterogeneity.
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial; D000917:Antibody Formation; D000918:Antibody Specificity; D005796:Genes; D008040:Genetic Linkage; D007126:Immunoglobulin Allotypes; D007143:Immunoglobulin Heavy Chains / Q000235:genetics; D007147:Immunoglobulin Light Chains / Q000235:genetics*; D007525:Isoelectric Focusing; D051379:Mice; D008815:Mice, Inbred Strains; D013045:Species Specificity; D013297:Streptococcus pyogenes / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D007126:Immunoglobulin Allotypes; D007143:Immunoglobulin Heavy Chains; D007147:Immunoglobulin Light Chains