Bacterial membrane and redox-active enzymes

Bacterial membrane redox-active enzymes comprise a variety of integral membrane proteins, notably terminal oxidases (such as cytochrome bd oxidase and cytochrome bo3 oxidase) that participate in aerobic respiration by transferring electrons and reducing molecular oxygen. These oxidases are essential for bacterial energy production and help bacteria adapt to stress conditions, including the presence of toxins like carbon monoxide. In addition, membrane-associated antioxidant enzymes such as SOD and catalase neutralize harmful reactive oxygen species at the cell envelope, thus defending bacteria against oxidative stress. The unique properties of these enzymes, such as their heme composition and resistance/sensitivity to inhibitors like CO, make them attractive targets for antibacterial drug development[1][2][3][4].

Other names

Cytochrome bd terminal oxidasebd oxidaseCytochrome bo3 terminal oxidaseterminal quinol oxidasebacterial membrane redox enzymeSOD

Drugs targeting these enzymes typically act via enzyme inhibition by blocking electron transfer or active site, ligand binding (competition at the heme center), and redox disruption.