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Identification and nucleotide sequence of a new null allele, HLA B*3540N. 2002

C Dunne, and A M Little, and S T Cox, and D Masson, and J Crowley, and T Barnes, and S G E Marsh, and G Rooney, and R Hagan, and E Lawlor, and J A Madrigal
National Tissue Typing Reference Laboratory, Irish Blood Transfusion Service, Dublin, Ireland. ciaran.dunne@ibts.ie

We report the definition of an HLA class I null allele that has been identified within the B35 group by a combination of serological and molecular typing. This allele, which has been named B*3540N, was detected in a French, potential unrelated hematopoietic stem cell donor of unknown ethnic origin, selected as a probable match for an Irish patient. The presence of the null allele was initially determined by the absence of B35 reactivity by serological typing, in contrast to positive reactions by PCR-SSP and PCR-SSO typing. Subsequent sequencing of clones containing the full genomic sequence of the B*35 allele identified a single nucleotide deletion within exon 4 which resulted in the introduction of a stop codon downstream within exon 4.

UI MeSH Term Description Entries
D007192 Indenes A family of fused-ring hydrocarbons isolated from coal tar that act as intermediates in various chemical reactions and are used in the production of coumarone-indene resins.
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D011725 Pyridines Compounds with a six membered aromatic ring containing NITROGEN. The saturated version is PIPERIDINES.
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D015235 HLA-B Antigens Class I human histocompatibility (HLA) surface antigens encoded by more than 30 detectable alleles on locus B of the HLA complex, the most polymorphic of all the HLA specificities. Several of these antigens (e.g., HLA-B27, -B7, -B8) are strongly associated with predisposition to rheumatoid and other autoimmune disorders. Like other class I HLA determinants, they are involved in the cellular immune reactivity of cytolytic T lymphocytes. Antigens, HLA-B,HLA-B Antigen,HLA-B,Antigen, HLA-B,Antigens, HLA B,HLA B Antigen,HLA B Antigens

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