Mitochondrial electron transport chain in Eimeria species

The mitochondrial electron transport chain (ETC) in Eimeria species is a multi-complex enzyme system embedded in the inner mitochondrial membrane that is essential for ATP production via oxidative phosphorylation. Eimeria, a genus of apicomplexan parasites, relies on mitochondrial ETC for energy metabolism, especially during intracellular development and adaptation to low-oxygen environments in host intestines. The ETC in Eimeria is composed of complexes I, II, III, and IV, and utilizes electron carriers such as ubiquinone, with evidence for stage-specific adaptation of the ETC, including the use of alternative quinones. The mitochondrial ETC is crucial for parasite survival, providing energy, supporting nucleotide biosynthesis pathways, and regulating apoptosis. Inhibition of the ETC, particularly complex III, is a validated therapeutic strategy (e.g., atovaquone). Mitochondria-mediated apoptosis via cytochrome c and the permeability transition pore (MPTP) also represents a host target mechanism influenced by Eimeria infection. This pathway is considered a promising and essential drug target for anti-coccidial drug development in both veterinary and research settings[1][4].

Other names

Mitochondrial electron transport chainETC in EimeriaEimeria mitochondrial ETC

Inhibition of electron transport, especially at complex III or cytochrome bc1 (as for atovaquone) Modulation of mitochondrial permeability transition pore (MPTP), influencing apoptosis (CsA) Alteration of cytochrome c redox state (TMPD + Asc)