Required for normal progression through mitosis. Involved in chromosome alignment and cytokinesis via regulation of microtubules polymerization. Interacts with PSRC1; recruited by PSRC1 to the spindle during mitosis (PubMed:26820536). Localizes at the spindle around the centrosome at prophase and prometaphase and at the spindle poles at metaphase and anaphase (PubMed:26820536). Phosphorylated during mitosis (PubMed:26820536).