title: The chromosomal location of T-cell receptor genes and a T cell rearranging gene: possible correlation with specific translocations in human T cell leukaemia.
abstract: We have examined the chromosomal location of human T cell-specific genes which are involved in antigen recognition and of a gene which specifically rearranges in T cells. The genes encoding both the variable and constant region segments of the T cell receptor alpha chain are found on chromosome 14 while the delta chain gene of the T cell receptor-associated T3 complex is localised to chromosome 11. Further, the two tandemly arranged T cell-specific rearranging genes, designated gamma, were mapped to chromosome 7, but apparently not closely linked to the previously mapped T cell receptor beta-chain gene. The locations of the three different genes, which undergo rearrangement in T cells, may correlate with the chromosomal breakpoints known to be involved in translocations within abnormal human T cells.
mesh_terms: D001483:Base Sequence; D002874:Chromosome Mapping; D002901:Chromosomes, Human, 13-15; D002906:Chromosomes, Human, 6-12 and X; D006801:Humans; D007938:Leukemia / Q000235:genetics*; D011948:Receptors, Antigen, T-Cell / Q000235:genetics*; D013601:T-Lymphocytes / Q000648:ultrastructure*; D014178:Translocation, Genetic
chemical_list: D011948:Receptors, Antigen, T-Cell