Enzyme-catalysed conjugations of glutathione with unsaturated compounds

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Abstract
Rat-liver supernatant catalyses the reaction of diethyl maleate with glutathione. Evidence is presented that the enzyme involved is different from the known glutathione-conjugating enzymes, glutathione S-alkyltransferase, S-aryltransferase and S-epoxidetransferase. Rat-liver supernatant catalyses the reaction of a number of other [alpha][beta] -unsaturated compounds, including aldehydes, ketones, lactones, nitriles and nitro compounds, with glutathione: separate enzymes may be responsible for these reactions.