Inner centromere protein (INCENP)

Part of the chromosomal passenger complex (CPC), a complex that acts as a key regulator of mitosis. The CPC complex has essential functions at the centromere in ensuring proper chromosome alignment and segregation and is required for chromatin-induced microtubule stabilization and spindle assembly.

Acts as a scaffold regulating CPC localization and action. The C-terminus associates with AURKB or AURKC, the N-terminus connected with BIRC5/survivin and CDCA8/borealin tethers the CPC to the inner centromere, and the microtubule binding activity within the central SAH domain directs AURKB/C toward substrates near microtubules (PubMed:15316025, PubMed:12925766, PubMed:27332895).