Minus end-directed microtubule-dependent motor required for bipolar spindle formation (PubMed:15843429). May contribute to movement of early endocytic vesicles (By similarity). Regulates cilium formation and structure (By similarity). Binds NUBP1 and NUBP2. Interacts with PPP1R42 (By similarity). Associated with nucleus during interphase, centrosomes in early and spindle in later mitosis. HeLa cells lacking KIFC1 show multipolar mitotic spindles and a defect in chromosome congression and chromosome alignment during mitosis. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. NCD subfamily.