Abstract
A drug, (E)-3-[4-(1-imidazolylmethyl)phenyl]-2-propenoic acid, was metabolized to 4-(1-imidazolylmethyl)benzoic acid in isolated hepatocytes of rats, which was enhanced markedly by the pretreatment of rats with clofibrate. With liver homogenates, the formation of the CoA-ester of this drug and its subsequent chain-shortening were demonstrated. In the series of these reactions, acyl-CoA synthetase, CoA, ATP and NAD were required, whereas cyanide did not inhibit the reaction. These results indicate that peroxisomes are capable of shortening the acyl side-chains of drugs by the beta-oxidation, giving an additional suggestion on the functions of peroxisomes.
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