Structural definition of the A*74 group: implications for matching in bone marrow transplantation with alternative donors.

Abstract excerpt

We have identified two new A*74 alleles (A*7402 and 7403) in two unrelated individuals. A*7402 differs from A*7401 by a single amino acid substitution in the signal peptide and may be the result of a gene conversion event at the 3' end of exon 1. A*7403 differs from A*7401 by a single amino acid exchange in the alpha 1 domain and is most likely due to a point mutation in exon 2, since no HLA class I donor allele...

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