Component of the CENPA-HI complex, a centromeric complex involved in assembly of kinetochore proteins, mitotic progression and chromosome segregation. Required for the localization of CENPC but not CENPA to the centromere. It however may be involved in incorporation of newly synthesized CENPA into centromeres via its interaction with the CENPA-NAC complex. Component of the CENPA-HI complex, at least composed of CENPH, CENPI, CENPK, CENPL, CENPM, CENPO and CENPP. Interacts with NDC80. Associates with active centromere-kinetochore complexes throughout the cell cycle. Belongs to the CENP-H/MCM16 family.