Fungal mitochondrial membrane

The fungal mitochondrial membrane is a critical cellular structure comprising an outer and a highly folded inner membrane that serves as the primary site for oxidative phosphorylation and energy production in fungal pathogens [1, 8]. It houses the electron transport chain (ETC) complexes and essential metabolic enzymes, such as dihydroorotate dehydrogenase (DHODH), which are vital for pyrimidine biosynthesis and overall fungal viability [3, 7, 9]. Beyond ATP synthesis, this membrane is central to regulating cellular homeostasis, including calcium levels, reactive oxygen species (ROS) production, and the induction of apoptosis, all of which influence fungal virulence and morphogenesis [6, 11, 12]. Therapeutically, it is the focus of several antifungal strategies: olorofim selectively inhibits the membrane-bound DHODH, while atovaquone and agricultural strobilurins target the cytochrome bc1 complex (Complex III) to halt respiration [3, 4, 7]. Investigational agents like T-2307 further exploit this target by selectively collapsing the fungal mitochondrial membrane potential, leading to rapid cell death [3, 7]. Given the emergence of multidrug-resistant strains, targeting specific fungal-unique subunits within the mitochondrial membrane remains a high-priority area for novel drug development [1, 8, 9].

Other names

Fungal mitochondrial inner membraneFungal mitochondrial outer membraneMycological mitochondrial membraneMitochondrial membrane (fungi)

Disruption of the electrochemical gradient (membrane potential), inhibition of the respiratory electron transport chain complexes (e.g., Complex I, III, or IV), and blockade of essential metabolic enzymes such as dihydroorotate dehydrogenase (DHODH), leading to oxidative stress and fungal cell death.