Malic enzyme (ME) may refer to decarboxylating malate dehydrogenases:Malate dehydrogenase (decarboxylating) or NAD-malic enzyme Malate dehydrogenase (oxaloacetate-decarboxylating), another NAD-malic enzyme Malate dehydrogenase (oxaloacetate-decarboxylating) (NADP+) or NADP-malic enzyme