The Malic Enzyme from Trypanosoma cruzi

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Abstract
Malic enzyme (EC 1.1.1.40) from T. cruzi Tulahuen strain was partially purified using homogenization, centrifugation and ammonium sulfate precipitation and assayed radiochemically for 14CO2 fixation on pyruvate. MW was determined by gel filtration techniques. T. cruzi malic enzyme was NADP-linked and was inhibited by oxaloacetate. The latter reaction might be involved in the regulation of aerobic fermentation in order to avoid recycling of C4 dicarboxylic acids to pyruvate.

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