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The mechanism of allelic competition in the ABO 547G>A mutant is associated with decreased activity of glycosyltransferase B

  • Geon Park
  • , Yong Gon Cho*
  • *Corresponding author for this work
  • Chosun University

Research output: Contribution to journalJournal articlepeer-review

Abstract

The 547G>A polymorphism demonstrates significant allelic competition in people who harborthe B306 allele. We have performed the full sequencing of ABO gene in family members and measuredtheir serum glycosyltransferase activity for demonstrating the cause of allelic competition. Genetic studyincluding two regulatory regions and exon 1, and exons 2-7 of ABO gene demonstrated c.547G>A in exon7 of the proband and her second son. The ABO genotype of the proband, husband, first son, and other sonwas ABO*A102/ABO*B306, ABO*A105/ABO*O02, ABO*A102/ABO*O02, and ABO*B306/ABO*O02 respectively. Serum glycosyltransferse B activity in the proband and her second son was lower than in normalB controls. We infer that allelic competition in the the 547G>A carrying individuals is associated withreduced activity of glycosyltransferase B.

Original languageEnglish
Pages (from-to)106-109
Number of pages4
JournalAnnals of Clinical and Laboratory Science
Volume46
Issue number1
StatePublished - 2016.01.1

Keywords

  • ABO discrepancy
  • Allelic competition
  • Weak B

Quacquarelli Symonds(QS) Subject Topics

  • Medicine

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