C721T mutation of the alpha 1,3 galactosyltransferase gene responsible for Bw subgroup / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
; (6): 138-141, 2005.
Article
de Zh
| WPRIM
| ID: wpr-321140
Bibliothèque responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To gain an insight into the molecular genetic basis of Bw subgroup of ABO blood group system.</p><p><b>METHODS</b>Three Bw phenotypes were confirmed by standard serological techniques. The enhancer, promoter and exons 1-7 including flanking introns of ABO gene were amplified and directly sequenced after PCR amplified fragments being purified by gel. Exons 6 and 7 were also sequenced after pcDNA3.1 (-) vector transformation. The sequence specific primer-polymerase chain reaction was performed to confirm the mutations detected by sequencing in this study.</p><p><b>RESULTS</b>Genotypes of three individuals were Bw/O by direct sequencing, there were G deletion heterozygous at position 261 and C/T heterozygous at position 721. A normal O allele was confirmed by cloning sequencing and 721 C>T mutation of the alpha 1, 3 galactosyltransferase (B allele) gene was also observed, which caused amino acid 241 Arg>Trp substitution. This mutation was not detected in 140 random samples by PCR-SSP.</p><p><b>CONCLUSION</b>The mutation of 721C>T in the alpha 1, 3 galactosyltransferase gene may be one of the molecular genetic bases of Bw phenotype.</p>
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Système ABO de groupes sanguins
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Analyse de mutations d'ADN
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Données de séquences moléculaires
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Séquence nucléotidique
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Introns
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Réaction de polymérisation en chaîne
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Exons
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Mutation ponctuelle
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Allèles
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Galactosyltransferases
Limites du sujet:
Female
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Humans
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Male
langue:
Zh
Texte intégral:
Chinese Journal of Medical Genetics
Année:
2005
Type:
Article