Flagellum Motar

The flagellum is linked to a flexible hook. The hook is attached to a series of protein rings , which are embedded in the outer and inner (plasma) membranes. The rings form a rotor, which rotates with the flagellum at more than 100 revolutions per second. The rotation is driven by a flow of protons through an outer ring of proteins , the stator, which also contains the proteins responsible for switching the direction of rotation

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