The flagellum can be divided into three parts ... in a similar way to those of the inner core of the filament 26. The main axial intermolecular interactions that hold the protofilament structure ...

Such flagella are built ... showed that the core of the filament consisted of inner and outer concentric tubes, built mainly from α-helices in broadly axial orientations. The eagerly awaited ...

The prokaryotic flagellum spins, creating forward movement by a corkscrew shaped filament. A prokaryote can have one or several flagella, localized to one pole or spread out around the cell.