SPECIFICITY OF AMINE OXIDASE FOR OPTICALLY ACTIVE SUBSTRATES AND INHIBITORS

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Abstract
A number of optically active amines have been tested as substrates or inhibitors of amine oxidase of rabbit and guinea-pig liver. The two stereoisomers of β-hydroxyphenethylamine were oxidized at the same rate by rabbit liver, but the guinea-pig liver extracts oxidized the d form more rapidly than the l form. The two stereoisomers of amphetamine were equally active as inhibitors of the rabbit liver oxidase, but with guinea-pig liver extracts dexamphetamine, the (+) form, was more potent as an inhibitor. In both species, 2-hydroxy-1-phenylethylamine was a weaker inhibitor than 1-phenylethylamine; in the rabbit liver (+) forms of these two amines were more potent as inhibitors.

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