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BRIEF REPORT
From INSERM-U76, Institut National de la Transfusion
Sanguine, Paris, France, and EFS Alpes-Provence, Marseille, France.
A new alteration of the blood group JK*A allele was
identified in a Jknull patient from Tunisia with an
allo-anti-Jk3 in her serum. Southern blot and exon mapping analyses
revealed an internal deletion within the Kidd (JK) locus encompassing
exons 4 and 5. Sequence analysis of the Jk transcript showed that exons
4 and 5 were missing but were replaced by a 136-base-pair (bp) intron 3 sequence located 315 bp and 179 bp upstream from exon 4. This sequence is flanked by typical donor-acceptor cryptic splice sites used in the mutant but not in the normal JK gene. Because
the translation initiation codon is located in exon 4, the Jk protein is not produced. This article has been cited by other articles:
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| Copyright © 2002 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||