Serological and immunochemical analysis of the products of a single HLA DR-alpha and DR-beta chain gene expressed in a mouse cell line after DNA-mediated cotransformation reveals that the beta chain carries a known supertypic specificity.
Using a mouse cell line transformed with and expressing a single HLA DR-alpha and DR-beta chain gene, we present evidence that the product of the DR-beta chain gene carries a supertypic determinant, BR3, previously defined by serology. The amino acid sequence of this beta chain gene is determined from the DNA sequence. Another DR-associated supertypic specificity defined by monoclonal antibody MCS7 was not encoded by this DR-beta chain gene. This provides formal proof that a supertypic specificity can be associated with a product of a distinct DR-beta locus. We propose that haplotypes sharing such specificities are evolutionarily related.
Gorski
J
J
Tosi
R
R
Strubin
M
M
Rabourdin-Combe
C
C
Mach
B
B
D000595:Amino Acid Sequence; D000818:Animals; D002460:Cell Line; D004247:DNA / Q000235:genetics; D000939:Epitopes / Q000235:genetics / Q000276:immunology; D005347:Fibroblasts / Q000276:immunology; D005796:Genes; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000235:genetics* / Q000276:immunology; D006801:Humans; D007120:Immunochemistry; D051379:Mice; D014162:Transfection; D014170:Transformation, Genetic
D000939:Epitopes; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II; D004247:DNA