Mycobacterial membrane energetics and transport system

The term "Mycobacterial membrane energetics/transport" refers not to a single protein or molecule, but to the entire set of membrane-bound protein complexes and electron carriers that mediate respiration, energy conservation, and transmembrane transport in mycobacteria such as *Mycobacterium tuberculosis*. This energetic system includes complexes such as NADH dehydrogenases (complex I), succinate dehydrogenases, terminal respiratory oxidases (cytochrome aa3-type and bd-type oxidases), menaquinone/menaquinol as a mobile electron carrier, and ATP synthase[1]. These systems enable mycobacteria to generate ATP and maintain redox balance under varying environmental conditions, including hypoxia and nutrient starvation. Disruption of these processes is highly effective for killing mycobacteria, making them validated targets for antimicrobial drugs such as bedaquiline, clofazimine, and Q203, which inhibit ATP synthase or terminal oxidases. While essential for mycobacterial survival and pathogenesis, this entity is not a single gene, protein, or classical receptor, but a broad functional and molecular category. Hence, "Mycobacterial membrane energetics/transport" should be considered a functional target description and *not* a canonical molecular target[1][3]. Additional notes: - The term is overly broad and does not refer to a specific, well-defined protein or therapeutic target, but rather a collection of components involved in respiration and transport in mycobacteria[1][3]. - For structured drug and target databases, specific entries such as "ATP synthase (ATPase subunit c)", "Cytochrome bc1 complex", or "MmpL3 transporter" are more canonical, well-defined targets[3].

Other names

Electron transport chain (ETC) of MycobacteriumMycobacterial respiration chainMycobacterial membrane transporters

Inhibition of ATP synthesis by F1FO-ATP synthase inhibition; Disruption of electron flow in electron transport chain; Blocking terminal oxidase function, decreasing proton motive force and ATP generation