Bacterial respiratory and redox enzymes

Bacterial respiratory and redox enzymes are essential components of the bacterial electron transport chain (ETC) and oxidative phosphorylation machinery. These enzymes, including NADH dehydrogenases (NDH-1 and NDH-2), terminal oxidases (such as Cytochrome bd and Cytochrome bc1:aa3), and the ATP synthase complex, facilitate the transfer of electrons to generate a proton motive force used for ATP production. Unlike mammalian mitochondria, bacteria possess a diverse and flexible respiratory network that allows them to adapt to various environmental stresses and oxygen levels. This metabolic diversity, particularly the presence of enzymes like NDH-2 and Cytochrome bd that are absent in humans, makes the bacterial respiratory chain a highly attractive target for novel antimicrobial development. Drugs such as bedaquiline and telacebec have successfully targeted these pathways to treat drug-resistant infections, particularly tuberculosis, by disrupting the energy supply required for bacterial survival and replication.

Other names

Bacterial electron transport chain enzymesBacterial bioenergetic enzymesOxidative phosphorylation enzymesBacterial ETC enzymesBacterial respiratory chain

Inhibition of electron flow through respiratory complexes, disruption of the proton motive force, and competitive inhibition of quinone binding sites or ATP synthase catalytic activity.