Membrane-bound proton-translocating ATPases that serve two important physiological functions in bacteria. One function is to generate ADENOSINE TRIPHOSPHATE by utilizing the energy provided by an electrochemical gradient of protons across the cellular membrane. A second function is to counteract a loss of the transmembrane ion gradient by pumping protons at the expense of adenosine triphosphate hydrolysis.

Synonyms: Bacterial F(1)F(0) ATPases, Bacterial Proton-Translocating ATPases, Proton-Translocating ATPases, Bacterial, Bacterial Proton Translocating ATPases, EC 3.6.1.-, ATPases, Bacterial Proton-Translocating