A Rotary Motor Drives Flavobacterium Gliding

A Rotary Motor Drives Flavobacterium Gliding

Cells of Flavobacterium johnsoniae, a rod-shaped bacterium devoid of pili or flagella, glide over glass at speeds of 2-4 μm/s [1]. Gliding is powered by a protonmotive force [2], but the machinery required for this motion is not known. Usually, cells move along straight paths, but sometimes they exhibit a reciprocal motion, attach near one pole and flip end over end, or rotate. This behavior is...

A reversible synthetic rotary molecular motor.

The circumrotation of a submolecular fragment in either direction in a synthetic molecular structure is described. The movement of a small ring around a larger one occurs through positional displacements arising from biased Brownian motion that are kinetically captured and then directionally released. The sense of rotation is governed solely by the order in which a series of orthogonal chemical...

F 1 - ATPase : A Rotary Motor Minireview

Rotary Electrodynamics of a DC Motor

The system shown in Figure 1 is a linear model of the Quanser SRV-02 DC motor with a static inertial load. In the model, • Rs is the resistance of the cable leading to the motor. Realistically, it should also include the output impedance of the amplifier driving the cable. Because the motor is a part of the process being controlled, the amplifier and cable together make up the actuator of the p...

Rotary Electrodynamics of a DC Motor

The system shown in Figure 1 is a linear model of the Quanser SRV-02 DC motor with a static inertial load. In the model, • Rs is the resistance of the cable leading to the motor. Realistically, it should also include the output impedance of the amplifier driving the cable. Because the motor is a part of the process being controlled, the amplifier and cable together make up the actuator of the p...