title: [Detection of polymorphism of HLA class II genes using synthetic oligonucleotides].
abstract: The recent sequence determination of exons of various HLA class II genes has allowed us to study the polymorphism of coding sequences of these genes on a sample of HLA-DR typed unrelated individuals. From this sequence determination have emerged polymorphic hypervariable areas. A 24-mer oligonucleotide has been synthetized, which corresponds to the first hypervariable region of the beta 1 domain of a DR-beta molecule. This oligonucleotide hybridized only with the DNA from DR3 or DR5 individuals tested, even under stringent conditions of washing. However, the existence of strong linkage disequilibrium among the 3 or 4 DR genes of the D region does not allow us to conclude that this sequence is epitope-specific.
mesh_terms: D005802:Genes, MHC Class II; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000235:genetics; D006801:Humans; D009693:Nucleic Acid Hybridization; D009841:Oligonucleotides / Q000138:chemical synthesis / Q000235:genetics; D011110:Polymorphism, Genetic
chemical_list: D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II; D009841:Oligonucleotides
vernacular_title: Détection du polymorphisme des gènes HLA de classe II à l'aide d'oligonucléotides de synthèse.