Microtubule-associated force-producing protein that plays a role in organelle transport. Its motor activity is directed toward the microtubule's plus end (By similarity). Required for cytokinesis. May be involved in a vesicle-mediated transport of myosin II; the Aurora kinase (aurK) and other proteins along mitotic extracellular microtubules toward the center of the cell and the cleavage furrow in order to ensure cell division coupled to mitosis. {ECO:0000250; ECO:0000269|PubMed:15546981; ECO:0000269|PubMed:18326585}.