Iron-sulfur (Fe-S) cluster binding motor protein that has a role in chromosome segregation during mitosis (PubMed:29848660). Translocates PRC1 to the plus ends of interdigitating spindle microtubules during the metaphase to anaphase transition, an essential step for the formation of an organized central spindle midzone and midbody and for successful cytokinesis (PubMed:15297875, PubMed:15625105). May play a role in mitotic chromosomal positioning and bipolar spindle stabilization (By similarity). Binds 1 [4Fe-4S] cluster (PubMed:29848660). In the presence of oxygen, the [4Fe-4S] cluster may be converted to [2Fe-2S] (PubMed:29848660). Interacts with the cytosolic iron-sulfur protein assembly (CIA) complex components CIAO2B and MMS19; the interactions facilitate the transfer of Fe-S clusters to KIF4A to ensure proper localization of KIF4A to mitotic machinery components (PubMed:29848660). Interacts (via C-terminus) with unphosphorylated PRC1 (via N-terminus); the interaction is required for the progression of mitosis (PubMed:15297875, PubMed:15625105, PubMed:29848660). Associates with chromosomes at all stage of mitosis (PubMed:11736643, PubMed:15297875, PubMed:15625105). Chromatin localization is dependent on iron-sulfur cluster binding (PubMed:29848660). In anaphase, associates with the mitotic spindle midzone (PubMed:15297875). In telophase and cytokinesis, co-localizes with CIAO2B at the spindle midzone and midbody (PubMed:29848660, PubMed:15297875). Co-localizes with PRC1 in early mitosis and at the spindle midzone from anaphase B to telophase (PubMed:15297875, PubMed:15625105). Does not localize to the nucleolus (PubMed:11736643). Highly expressed in hematopoietic tissues, fetal liver, spleen, thymus and adult thymus and bone marrow. Lower levels are found in heart, testis, kidney, colon and lung. The disease may be caused by variants affecting the gene represented in this entry. Belongs to the TRAFAC class myosin-kinesin ATPase superfamily. Kinesin family. Chromokinesin subfamily. Contaminating sequence. Potential poly-A sequence.