The protozoan parasite Toxoplasma gondii expresses two functional plant-like glycolytic enzymes. Implications for evolutionary origin of apicomplexans.

Abstract excerpt

The recent discovery of a vestigial, nonphotosynthetic plastid ("apicoplast") in the Apicomplexa has considerably modified our perception of the evolutionary origin of these parasites. Phylogenetic analysis and the presence of four surrounding membranes of the apicoplast provide important support for the hypothesis that apicomplexans have acquired their apicoplast by secondary endosymbiosis, probably from a green...

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