Mycobacterial energy metabolism and energetics targets

Mycobacterial energy metabolism and energetics targets refer to a collective group of essential proteins and enzymes within the respiratory chain and metabolic pathways of Mycobacterium tuberculosis. Key components include ATP synthase, which is responsible for generating cellular energy; the cytochrome bc1:aa3 oxidase complex (specifically the QcrB subunit), a critical part of the electron transport chain; and NADH dehydrogenases (Ndh and NdhA) (Cook et al., 2014, Nature Reviews Microbiology). These targets are vital for the survival of both actively replicating and dormant (persister) mycobacteria, as they maintain the proton motive force and ATP levels required for cellular homeostasis (Yano et al., 2011, Journal of Biological Chemistry). Drugs targeting these pathways, such as bedaquiline (an ATP synthase inhibitor) and telacebec (a QcrB inhibitor), have become cornerstone treatments for multidrug-resistant tuberculosis (MDR-TB) (Andries et al., 2005, Science; Pethe et al., 2013, Nature Medicine). Because these targets are often unique to mycobacteria or possess significant structural differences from human homologs, they offer high therapeutic selectivity, though clinical management must account for safety concerns like QT prolongation (Gler et al., 2012, New England Journal of Medicine).

Other names

Mycobacterial respiratory chain targetsMycobacterial oxidative phosphorylation pathwayMycobacterial energy metabolismM. tuberculosis energetics

Inhibition of mycobacterial ATP synthase (AtpE subunit), inhibition of the cytochrome bc1:aa3 oxidase complex (QcrB subunit), and disruption of the respiratory electron transport chain leading to ATP depletion and metabolic collapse.