The CEP97 gene encodes a cytosolic protein that forms a complex with the CP110 protein. This complex localizes to the centrosome, a microtubule organizing center consisting of two orthogonally arranged centrioles and a pericentriolar matrix. Centrioles are involved in two major cellular processes: cell division and ciliogenesis. During mitosis, centrioles help in the formation of spindle fibers that separate the chromosomes and during the G1 phase of the cell cycle, they help in ciliogenesis by forming basal bodies that nucleate cilia. These cilia are resorbed into the cell before the next mitosis cycle, presumably as they interfere with mitosis. The protein complex of CEP97 and CP110 is believed to help the centrosome transition into its role in mitosis by capping the mother centriole and inhibiting ciliogenesis.