A unique second donor splice site in the intron 5 sequence of the HLA-A*11 alleles results in a class I transcript encoding a molecule with an elongated cytoplasmic domain.

Abstract excerpt

Full-length cDNA sequencing of the A*1103 allele revealed an insertion of 18 bp between exon 5 and 6. We hypothesized that this could be the result of alternative splicing. Sequencing of intron-5 of A*1101, *1102 and *1103 alleles demonstrated that this 18-bp insertion consisted of the 5'-end of intron 5, concluded by a second in-frame donor splice site. Alignment of the 5'-end intron 5 sequence of A*1101-3 with...

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