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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Inheritance of acetylator genotype-dependent arylamine N-acetyltransferase in hamster bladder cytosol.

Acetyl coenzyme A-dependent arylamine N-acetyltransferase (EC was examined in bladder cytosol derived from inbred Syrian hamsters. Expression of N-acetyltransferase activity towards p-aminobenzoic acid, p-aminosalicylic acid and 2-aminofluorene was acetylator genotype-dependent. Highest levels of bladder N-acetyltransferase activity were expressed in homozygous rapid acetylator hamsters (Bio. 87.20), lowest levels in homozygous slow acetylator hamsters (Bio. 82.73/H), and intermediate levels in Bio. 87.20 X Bio. 82.73/H F1 generation progeny. The N-acetyltransferase activity was acetylator genotype-dependent in both epithelial and non-epithelial bladder tissue. Genetic crosses using p-aminobenzoic acid and p-aminosalicylic acid as substrates indicated that bladder N-acetyltransferase activity is controlled via simple autosomal Mendelian inheritance of two codominant alleles at a single genetic locus. Acetylator genotype as assessed by bladder N-acetyltransferase activity was completely concordant with acetylator genotype as assessed by liver N-acetyltransferase activity. N-Acetyltransferase in slow acetylator bladder cytosol was both an apparent Km and Vmax variant compared to N-acetyltransferase in rapid acetylator bladder cytosol. These results suggest that genetic control of arylamine N-acetyltransferase in bladder urothelium may be a factor in hereditary predisposition to arylamine-induced bladder cancer.[1]


  1. Inheritance of acetylator genotype-dependent arylamine N-acetyltransferase in hamster bladder cytosol. Hein, D.W., Kirlin, W.G., Yerokun, T., Trinidad, A., Ogolla, F. Carcinogenesis (1987) [Pubmed]
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