Borealin is a subunit of the chromosomal passenger complex (CPC), which is necessary for chromosome segregation and cytokinesis. While CPC shows a dynamic localization pattern during mitosis, Borealin and survivin, another subunit of CPC is essential to localize CPC at centromare from prophase to anaphase. It is thought that Borealin and survivin recruit aurora B, a kinase subunit of CPC, to inner centromare to allow phosphorylating appropriate substrates.Synonyms: Cell division cycle-associated protein 8, Dasra-B, PESCRG3, Pluripotent embryonic stem cell-related gene 3 protein, hDasra-B