Localizes to the inner centromere throughout prophase until metaphase and disappears at anaphase. During prometaphase, it localizes to a single focus, while at metaphase, it localizes to 2 spots corresponding to the 2 centromeres. Centromeric localization requires the presence of BUB1 and the interaction with PPP2R1A. Localizes to the inner kinetochore from prophase to early metaphase. Phosphorylation by AUKRB and the presence of BUB1 are required for localization to the kinetochore. Co-localizes with NEK2 and SS18L1 at the kinetochore (By similarity).