Mammals have three enolases. A more descriptive name is "phosphopyruvate hydratase" - they catalyze the conversion of 2-phospho-D-glycerate to phosphoenolpyruvate.
In Plasmodium falciparum, there is still some controversy about their enolase. It appears that at least part of it comes from a migration from the apicoplast genome into the nuclear genome, but it may be a hybrid. Here's the telltale insertion that matches up with plants (in this case rice, but the apicoplast probably came from a red algae ancestor endosymbiont):