site of various protein complexes which includes dynein molecular motor proteins which confer the ability for bending and motility.

The outer doublet microtubules are also the tracks on which motor proteins walk. The walking action of axonemal dyneins bound to the neighbouring doublet microtubule lead to doublet microtubule sliding and subsequently axoneme bending which is the basis for flagellum/cilium beating. The walking action of kinesin-2