Motor protein required for establishing a bipolar spindle during mitosis. Required in non-mitotic cells for transport of secretory proteins from the Golgi complex to the cell surface. Interacts with the thyroid hormone receptor in the presence of thyroid hormone. Component of a large chromatin remodeling complex, at least composed of MYSM1, PCAF, RBM10 and KIF11/TRIP5. Interacts with RARRES1 and AGBL2 (By similarity). Phosphorylated exclusively on serine during S phase, but on both serine and Thr-925 during mitosis, so controlling the association of KIF11 with the spindle apparatus (probably during early prophase). Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. BimC subfamily.