Plays a role in neurogenesis and neuronal migration (PubMed:11734602). Necessary for correct formation of mitotic spindles and chromosome separation during mitosis (By similarity). Necessary for cytokinesis and cell proliferation (By similarity). Interacts with PLK1 (By similarity). Interacts with PAFAH1B1 (PubMed:9601647). Part of a complex containing PLK1, NUDC, dynein and dynactin (PubMed:11734602). Interacts with DCDC1 (By similarity). Interacts with EML4 (via WD repeats) (By similarity). A small proportion is nuclear, in a punctate pattern (By similarity). In a filamentous pattern adjacent to the nucleus of migrating cerebellar granule cells. Colocalizes with tubulin and dynein and with the microtubule organizing center. Distributed throughout the cytoplasm of non-migrating cells (By similarity). Localizes to the mitotic spindle in a EML4-dependent manner (By similarity). Detected in fetal and adult brain, in particular in the ventricular zone of the embryonic forebrain and in the embryonic cortical plate. Highly expressed in brain cortex from new born and adult mice. Detected in the choroid plexus and in ependymal cells in embryonic brain. Up-regulated in silica-treated macrophages. Reversibly phosphorylated on serine residues during the M phase of the cell cycle. Phosphorylation on Ser-275 and Ser-327 is necessary for correct formation of mitotic spindles and chromosome separation during mitosis. Phosphorylated by PLK and other kinases (By similarity). Belongs to the nudC family.