Microtubule-binding motor protein probably involved in neuronal axonal transport. In vitro, has a plus-end directed motor activity. Interacts (via residues 1148-1169) with KANK1 (via ankyrin repeats 1-5) and KANK2 (via ankyrin repeats 1-5). In neurons, localized to axons and dendrites. Widely expressed, with highest expression in brain. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family.