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Characterization of the ABO blood group genes in macaques: evidence for convergent evolution
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Abstract: The ABO blood group system is known to act as a major transplantation barrier in primates. Different primate species share the presence of A and B antigens. The polymorphism of the macaque ABO blood group genes was analyzed by cloning and sequencing the exon 7 region. In the case of the rhesus macaque (Macaca mulatto) and cynomolgus monkey (Macaca fascicularis) we were able to identify ABO blood group gene segments which cluster into two lineages, namely: *A/*O1 and *B. In addition allelic variation was observed. The 2 amino acid replacements at positions 266 and 268, which are thought to be crucial for A or B transferase activity, could be confirmed for both macaque species. Comparison of primate sequences shows that A and B reactivity was generated independently from each other in the hominoids and Old World monkey lineages. Hence, the primate A and B blood group genes are subject to convergent evolution.
Title: Characterization of the ABO blood group genes in macaques: evidence for convergent evolution
Description:
Abstract: The ABO blood group system is known to act as a major transplantation barrier in primates.
Different primate species share the presence of A and B antigens.
The polymorphism of the macaque ABO blood group genes was analyzed by cloning and sequencing the exon 7 region.
In the case of the rhesus macaque (Macaca mulatto) and cynomolgus monkey (Macaca fascicularis) we were able to identify ABO blood group gene segments which cluster into two lineages, namely: *A/*O1 and *B.
In addition allelic variation was observed.
The 2 amino acid replacements at positions 266 and 268, which are thought to be crucial for A or B transferase activity, could be confirmed for both macaque species.
Comparison of primate sequences shows that A and B reactivity was generated independently from each other in the hominoids and Old World monkey lineages.
Hence, the primate A and B blood group genes are subject to convergent evolution.
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