Isolation and characterization of arylacetamide deacetylase in cynomolgus macaques.

Arylacetamide deacetylase (AADAC), a microsomal serine esterase, hydrolyzes drugs, such as flutamide, phenacetin and rifampicin. Because AADAC has not been fully investigated at molecular levels in cynomolgus macaques, the non-human primate species widely used in drug metabolism studies, cynomolgus AADAC cDNA was isolated and characterized. The deduced amino acid sequence, highly homologous (92%) to human AADAC, was more closely clustered with human AADAC than the dog, rat or mouse ortholog in a phylogenetic tree. AADAC was flanked by AADACL2 and SUCNR1 in the cynomolgus and human genomes. Moreover, relatively abundant expression of AADAC mRNA was found in liver and jejunum, the drug-metabolizing organs, in cynomolgus macaques, similar to humans. The results suggest molecular similarities of AADAC between cynomolgus macaques and humans.

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