Plasmodium mitochondrion

The Plasmodium mitochondrion is a vital organelle that serves as a central metabolic hub for malaria parasites, including Plasmodium falciparum and Plasmodium vivax. Unlike mammalian mitochondria, which are primarily focused on ATP production through oxidative phosphorylation, the parasite's mitochondrion in the erythrocytic stage is essential for providing electrons to the de novo pyrimidine biosynthesis pathway via dihydroorotate dehydrogenase (DHODH) [Painter et al., 2007]. This organelle possesses a highly reduced genome and a specialized electron transport chain that includes the cytochrome bc1 complex and various alternative dehydrogenases [Mather et al., 2007]. It is a validated therapeutic target for several antimalarial drugs, most notably atovaquone, which selectively inhibits the cytochrome bc1 complex, leading to a collapse of the mitochondrial membrane potential and parasite death [Vaidya & Mather, 2009]. Because of the significant structural and functional differences between parasite and host mitochondrial processes, this organelle remains a key focus for the development of novel, selective antimalarial agents [Goodman et al., 2007].

Other names

Plasmodium mitochondriaMalaria parasite mitochondrionMitochondrial electron transport chain of Plasmodium

Inhibition of the cytochrome bc1 complex (Complex III) and dihydroorotate dehydrogenase (DHODH), which disrupts the electron transport chain and halts de novo pyrimidine biosynthesis [Vaidya & Mather, 2009; Painter et al., 2007].