Fig. 1.

The C. jejuni flagellum. Adapted according to Burnham and Hendrixson (2018). C. jejuni possesses two polar flagella which basically consist of the flagellar filament and the basal body with the MS and C ring, encasing the type III secretion system and the hook and rod traversing the bacterium’s cell surface. The flagellar filament is composed of O-glycosylated flagellin proteins FlaA and FlaB. The basal body is surrounded by the basal, medial, and proximal disc which are composed of FlgP, PflA, and MotAB. The MS ring is formed by FliF multimers and the C ring of FliG multimers. The T3SS secretes flagellar proteins, Cia and Fed proteins