Required during prometaphase for centrosome maturation. Following poly-ADP-ribosylation (PARsylation) by TNKS, translocates from the Golgi apparatus to mitotic centrosomes and plays a key role in the formation of robust microtubules for prompt movement of chromosomes: anchors AKAP9/CG-NAP, a scaffold protein of the gamma-tubulin ring complex and promotes centrosome maturation. In interphase, localizes to the Golgi apparatus. Localizes to centrosomes and spindles during prophase, prometaphase, and metaphase of mitosis, and to midbodies at telophase. Translocation to mitotic centrosomes is the result of poly-ADP-ribosylation (PARsylation). Widely expressed. Poly-ADP-ribosylated (PARsylated) by tankyrase TNKS during late G2 and prophase, leading to translocation to mitotic centrosomes. N-glycosylated.