title: A novel HLA-DR13 allele (DRB1*1314) identified by single-strand conformation polymorphism analysis and confirmed by direct sequencing.
abstract: A novel variant of the HLA-DR13 group is described. The new allele was found in a DR10, 13 heterozygous patient of Turkish origin, two HLA genotypically identical children of the patient typed as DR11,13, and one child typed as DR13,13. DR13 subtyping of the patient was initially performed by SSCP analysis of PCR-amplified DNA, using the 11th OHWS primers DRBAMP-3 and DRBAMP-B. Due to an unusual SSCP banding pattern, the PCR product was subjected to solid-phase sequencing. The sequence of the new allele, DRB1*1314, is different from that of DRB1*1307 by a single nucleotide substitution in codon 47, with T replacing consensus A. This results in a single amino acid change of tryptophan to phenylalanine in the first domain of the DR beta chain.
mesh_terms: D000755:Anemia, Sickle Cell / Q000235:genetics; D001483:Base Sequence; D002648:Child; D006684:HLA-DR Antigens / Q000235:genetics*; D059811:HLA-DRB1 Chains; D006239:Haplotypes / Q000276:immunology; D006801:Humans; D008969:Molecular Sequence Data; D018807:Polymorphism, Single-Stranded Conformational; D017422:Sequence Analysis, DNA; D014421:Turkey / Q000208:ethnology
chemical_list: D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains