title: Structure and expression of a mouse major histocompatibility antigen gene, H-2Ld.
abstract: A genomic clone encoding H-2Ld, a mouse major transplantation antigen, has been identified and the structure of the H-2Ld gene has been partially determined. We isolated 35 genomic clones from a BALB/c (H-2d) genomic library by hybridization to mouse or human probes. One of these clones encodes H-2Ld as determined by two criteria. First, the gene encodes a protein that is identical at the 76 known amino acid positions for H-2Ld. Second, when introduced into L cells by DNA-mediated gene transfer, a new H-2 antigen is expressed that is recognized by anti-H-2Ld monoclonal antibodies. The sequence of the H-2Ld protein predicted by the DNA sequences shows more than 80% homology to known H-2 antigens. H-2L-like sequences are found in mutant H-2Kb molecules, suggesting that gene conversion or reciprocal recombination may play a role in the development of H-2 polymorphism.
mesh_terms: D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D005785:Gene Conversion; D005786:Gene Expression Regulation; D005796:Genes; D006183:H-2 Antigens / Q000235:genetics*; D008223:Lymphoma / Q000276:immunology; D008285:Major Histocompatibility Complex; D051379:Mice
chemical_list: D006183:H-2 Antigens; D004247:DNA