Functional expression of human arylamine N-acetyltransferase NAT1*10 and NAT1*11 alleles

Sequences and expression of alleles of polymorphic arylamine N-acetyltransferase of human liver.

Fifty human livers obtained at autopsy were analyzed for N-acetyltransferase and classified into six genotypes. Determination of N-acetyltransferase activity and proteins from supernatants of liver homogenates indicate that genotype I corresponds to rapid acetylator, genotypes II and III to intermediate acetylator, and genotypes IV, V, and VI to slow acetylator phenotypes. Northern blot analysi...

Expression of arylamine N-acetyltransferase in human intestine.

BACKGROUND Arylamine N-acetyltransferases in humans (NAT1 and NAT2) catalyse the acetylation of arylamines including food derived heterocyclic arylamine carcinogens. Other substrates include the sulphonamide 5-aminosalicylic acid (5-ASA), which is an NAT1 specific substrate; N-acetylation of 5-ASA is a major route of metabolism. NAT1 and NAT2 are both polymorphic. AIMS To investigate NAT expr...

Arylamine N-acetyltransferase.

304 3.5. Namboodiri. kl. A. A,. Nakai. C‘. k Klein, 1). C. (1070) J. Ncurochem. 33. 807-810 30. Klein. 1). C’. k Namboodiri, M. A. A. (1082) Trends Biochem. Sci. 7, OXI02 37. Namboodiri, M. A. A,, Weller, J. I , . Kc Klein, I). C’. (1080) J. l k l . Cheni. 255. 6032-0035 38. Namboodiri, M. A. A,. Weller, J. I, . K: Klein, I). C’. ( 1080) Hiochem. Hiophys. Kes. C’ommun. 96, 1 8%1 05 30 . Niimboo...

NAT 2 ( N - acetyltransferase 2 ( arylamine N - acetyltransferase ) )

NAT 1 ( N - acetyltransferase 1 ( arylamine N - acetyltransferase ) )

The human NAT1 gene has nine exons. The coding region is located in exon 9 and spans 870 bp. Diverse NAT1 transcripts have been reported and two promoters exist. The first promoter, designated as P1 is located in the 5' flanking region of exon 1 and controls two major (a1 and a2) transcripts. The second promoter is located upstream of exon 4 and give rise to at least five (b1 to b5) different t...