Biochemical Genetics

, Volume 28, Issue 7–8, pp 433–441 | Cite as

Biochemical analysis of related, independently arising histocompatibility mutants: bm17 and KB-98 enlarge the “bg series” of H-2Kb mutants

  • Gertrude M. Pfaffenbach
  • Roger W. Melvold
  • Stanley G. Nathenson


The “bg” series of MHC mutations is the most prevalent type of mutations of Kb in C57BL/6 mice screened by reciprocal tail skin grafting. The basis for identification of this series of mutations is the incompatibility of grafts between the parental B6 and the mutant. This series takes the longest to reciprocally reject the skin grafts. The series can be subdivided into “bg 1” and “bg 2” groups based on Kb-restricted recognition of virus-infected mutant target cells. The biochemical basis for these mutations are amino acid substitutions at residues 116 and 121 of the Kb transplantation antigen. These substitutions do not alter monoclonal antibody binding sites. The structural basis of MAb binding and the genetic basis of the mutation are discussed.

Key words

murine histocompatibility antigens H-2 mutants genetic recombination structural alterations 


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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • Gertrude M. Pfaffenbach
    • 1
  • Roger W. Melvold
    • 2
  • Stanley G. Nathenson
    • 1
  1. 1.Departments of Microbiology and Immunology and Cell BiologyAlbert Einstein College of MedicineBronx
  2. 2.Northwestern University School of MedicineChicago

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