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  • Title: Biochemical studies of H-2K antigens from a group of related mutants. I. Identification of a shared mutation in B6-H-2bm5 and B6-H-2bm16.
    Author: Yamaga KM, Pfaffenbach GM, Pease LR, McGovern D, Nisizawa T, Melvold RW, Kohn HI, Nathenson SG.
    Journal: Immunogenetics; 1983; 17(1):19-29. PubMed ID: 6826207.
    Abstract:
    Structural studies of the H-2 gene products from a group of five closely related but independent C57BL/6H-2 mutant mice were undertaken. Each of the mutants exhibits reciprocal graft rejection with the parent. The group is remarkable, however, because each member of this group can accept skin grafts from any other member. The results of biochemical analysis of the H-2 glycoproteins from two of these related mutants, bm5 and bm16, are presented in this report. Evidence is given that the H-2K molecules from these two mutants are identical to each other based on comparative tryptic peptide mapping profiles with the parent. From partial amino acid sequence analysis, K products of both mutants have at least one common difference from the parental type located at residue number 116. Definitive studies established that in both bm5 and bm16 a tyrosine found in the parent molecule is substituted with a phenylalanine in the mutant. These results show that a biochemical difference between the K products of the two mutants and of the parent can be detected, that the mutants appear to be identical with one another even though they arose independently, and that they differ from the other H-2Kb mutants analyzed.
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