Abstract
This report summarizes our current understanding of the heavy chain haplotypes found in our laboratories' rabbits. Independently derived data from several laboratories have been synthesized into a consistent picture of the linked inheritance of allotypic markers found on the different heavy chain classes and subclasses of rabbit immunoglobulins in pedigreed rabbits, including the families of three apparentVH-CH recombinants. In one recombinant, the entire group ofCH markers (Cμ, Cγ, and Cα) recombined with the set ofVH. Although in the other two recombinants all CH markers may also have recombined as a group, in one of these only IgG and IgACH genes were informative; in the other recombinant, only the IgG allotypes were informative. Some allotypic determinants found on IgM molecules (“conformational”) appear only when a specific variable region allotype (VHa) is combined with a specific μ constant region allotype (Cμ). New combinations ofVHa and Cμ allotypes were generated in two of the genetic recombinants and led to new “conformational” determinants. The gains and losses observed lend support to the hypothesis that the determinants result from conformations generated by the combination of allotype-specificVH and Cμ protein sequences. Conceivably, DNA events that joinVH to diversity (D)- and joining (J)-coding sequences or mRNA processing events that splice J to Cμ could be involved in generating the sequences that form allotype-specific determinants.
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Mage, R.G., Dray, S., Gilman-Sachs, A. et al. Rabbit heavy chain haplotypes — Allotypic determinants expressed byVH-CH recombinants. Immunogenetics 15, 287–297 (1982). https://doi.org/10.1007/BF00364337
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DOI: https://doi.org/10.1007/BF00364337