Abstract
To investigate the molecular basis for a novel human leukocyte antigen (HLA) allele B*5827. DNA from the proband was analyzed by polymerase chain reaction-sequence specific oligonucleotide (PCR-SSO) typing. The amplified product was sequenced bidirectionally. Abnormal HLA-B locus was observed and its nucleotide sequence was different from the known HLA-B allele sequences, with highest homology to HLA-B*5820 allele. It differs from HLA-B*5820 by 8 nucleotide substitutions in exon 3, i.e., nt 290 (G > C), nt 346 (T > A), nt 390 (A > C), nt 404 (G > C), nt 413 (C > G), nt 471 (A > G), nt 486 (A > G) and nt 487 (C > A), resulting in an amino acid change from ser > arg at nt 97, phe >tyr at nt 115, ser > arg at nt 130, thr > ala at nt 157 and thr > glu at nt 162. Nucleotide differences of nt 404 (G > C) and nt 413( C > G) did not change amino acid. The sequences of the novel allele have been submitted to GenBank (access No.GU071234). A novel HLA class I allele B*5827 has been officially assigned by the WHO HLA Nomenclature Committee in Jan. 2010.
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