抄録
Bacterial flagellar motors are molecular machines powered by the electrochemical potential gradient of specific ions, H+ or Na+, across the membrane. The force is generated by the interaction between a stator and a rotor of the motor which is located at the base of flagellum. A mechanical model of the H+-driven motor rotation by electrostatic interactions between the stator protein, MotA, and the rotor protein, FliG, has been presented. In this review, we summarize recent studies of the Na+-driven motor and discuss the molecular mechanism of the rotation comparing with the H+-driven motor.
