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Eighteen novel polymorphisms of the CYP2A13 gene in Japanese.

Fujieda M., Yamazaki H., Kiyotani K., Muroi A., Kunitoh H., Dosaka-Akita H., Sawamura Y., Kamataki T.

We sequenced all nine exons, exon-intron junctions including a part of introns, 5'-flanking and 3'-untranslated regions of the cytochrome P450 (CYP) 2A13 gene from 192 Japanese individuals. We found eighteen novel genetic polymorphisms including five single nucleotide polymorphisms (SNP) and one three base pair insertion causing amino acid substitution and one amino acid insertion, respectively, one silent SNP in exon 4, four SNPs in a 5'-flanking region, and seven SNPs in introns. The five SNPs (74G>A in exon 1, 579G>A in exon 2, 1706C>G in exon 3, and 7343T>A and 7465C>T in exon 9) causing amino acid substitutions (Arg(25)Gln, Arg(101)Gln, Asp(158)Glu, Phe(453)Tyr, and Arg(494)Cys), respectively. The one three base pair insertion (1634_1635 ACC insertion in exon 3) caused one amino acid insertion ((133_134)Thr ins). These sequences are as follows:SNP, 021125Fujieda005; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base;5'-TGTCAGTCTGGCG/AGCAGAGGAAGAG-3'.SNP, 021125Fujieda007; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base; 5'-AGTTCAGCGGGCG/AAGGCGAGCAGGC-3'.SNP, 021125Fujieda009; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base; 5'-CTTCCTCATCGAC/GGCCCTCCGGGGC-3'.SNP, 021125Fujieda017; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base; 5'-TCTTTCTCTTCTT/ACACCACCATCAT-3'.SNP, 021125Fujieda018; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base; 5'-AGCTTCCTGCCCC/TGCTGAGCGAGGG-3'.SNP, 021125Fujieda008; GENE NAME, CYP2A13; ACCESSION NUMBER, NG_000008; LENGTH, 25 base; 5'-CTCCATCGCCACC-/ACCCTAAGGGGTTTT-3'.

Drug Metab. Pharmacokinet. 18:86-90(2003) [PubMed] [Europe PMC]

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