Genetic polymorphism of bile acid CoA:: Amino acid n-αcyltransferase in Japanese individuals

In the present study, we identified three novel single nucleotide polymorphisms (SNPs), 147C > T in exon 2 (silent), 602G > C in exon 3 (Arg201Pro), and 1134C > T in exon 4 (silent), in the gene of bile acid CoA: amino acid N-acyltransferase (BAAT) by resequencing the entire coding region and the exon-intron junctions of 100 Japanese individuals. The allelic frequencies were 0.005 for 147C > T, 0.095 for 602G>C, and 0.015 for 1134C>T. The two known SNPs, 59G>A (Arg20Gln, rs1572983) and UTR1513G>A (rs2229594), were detected at a frequency of 0.500 and 0.425, respectively. In the haplotype analysis for the 59G>A and 602G>C polymorphisms, the allelic frequency of 59G-602G, 59G-602C, 59A-602G and 59A-602C was 0.405, 0.095, 0.500 and 0.000, respectively. On the other hand, the allelic frequency of the nonsynonymous SNP 602G>C was 0.194 in a Caucasian population.