title: Comparison of amino acid sequences of two human histocompatibility antigens, HLA-A2 and HLA-B7: location of putative alloantigenic sites.
abstract: The complete amino acid sequence for papain-solubilized HLA-B7 heavy chain is compared with the partial sequences of HLA-A2 and H-2Kb heavy chains. Although these molecules are highly conserved (i.e., 80% homology in comparing HLA-B7 with HLA-A2; 72% and 74% homology in comparing H-2Kb with HLA-A2 and HLA-B7, respectively), two stretches of greater variability are observed. These clusters of variability are discussed in terms of their possible involvement in the alloantigenic determinant(s) characteristic of these highly polymorphic membrane antigens.
mesh_terms: D000595:Amino Acid Sequence; D002460:Cell Line; D003488:Cyanogen Bromide; D000939:Epitopes; D006680:HLA Antigens / Q000235:genetics / Q000276:immunology*; D006801:Humans; D046911:Macromolecular Substances; D010206:Papain / Q000378:metabolism; D010446:Peptide Fragments / Q000276:immunology; D011110:Polymorphism, Genetic
chemical_list: D000939:Epitopes; D006680:HLA Antigens; D046911:Macromolecular Substances; D010446:Peptide Fragments; D010206:Papain; D003488:Cyanogen Bromide