Plays a role in the microtubule-dependent coupling of the nucleus and the centrosome. Involved in the processes that regulate centrosome-mediated interkinetic nuclear migration (INM) of neural progenitors (By similarity). Acts as component of the TACC3/ch-TOG/clathrin complex proposed to contribute to stabilization of kinetochore fibers of the mitotic spindle by acting as inter-microtubule bridge. The TACC3/ch-TOG/clathrin complex is required for the maintenance of kinetochore fiber tension (PubMed:21297582, PubMed:23532825). May be involved in the control of cell growth and differentiation. May contribute to cancer (PubMed:14767476). Interacts with microtubules. Interacts with CKAP5 independently of clathrin. Interacts with CKAP5 and clathrin forming the TACC3/ch-TOG/clathrin complex located at spindle inter-microtubules bridges; TACC3 (phosphorylated at Ser-558 by AURKA) and CLTC are proposed to form a composite microtubule interaction surface (PubMed:21297582, PubMed:23918938, PubMed:25596274). Interacts with CCDC100/CEP120. The coiled coil C-terminal region interacts with AH receptor nuclear translocator protein (ARNT) and ARNT2 (By similarity). Interacts with GCN5L2 and PCAF (PubMed:14767476). In complex with CKAP5 localized to microtubule plus-ends in mitosis and interphase. In complex with CKAP5 and clathrin localized to inter-microtubule bridges in mitotic spindles. Up-regulated in various cancer cell lines. Belongs to the TACC family.