Has a role in establishing metaphase during mitosis. Required for chromosome segregation where it generates tension during kinetochore capturing. Heterodimer with klp5. Cytoplasmic microtubules in interphase, mitotic kinetochores in metaphase and spindle midzone in anaphase and telophase. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. Kinesin II subfamily.