The nucleotide (nt) and deduced amino acid (aa) sequences were determi
ned for polymorphic arylamine N-acetyl-transferase (NAT2) and its gene
, NAT2, from homozygous rapid and slow acetylator congenic Syrian hams
ters. The slow acetylator (NAT2s) allele contained three point mutatio
ns which differed from the rapid acetylator allele (NAT2r); two mutati
ons were silent, and the third mutation resulted in a premature stop c
odon. The NAT2s allele contained a truncated open reading frame of 726
nt encoding a 242-aa protein, which is 48-aa shorter than NAT2.