Involved in the biogenesis of cilia (PubMed:20551181). Required for the recruitment of PLK1 to centrosomes and S phase progression (PubMed:24018379). Homooligomer; probably required for localization to centrosomes (PubMed:20551181). Forms a complex with KIAA0753/OFIP and OFD1; within this complex may stabilize the interaction between OFD1 and KIAA0753/OFIP (PubMed:26643951). Interacts with PCM1; this interaction may be mediated by KIAA0753/OFIP (PubMed:26643951). Interacts with PLK1 in later G1, S, G2 and M phases of the cell cycle; this interaction recruits PLK1 to centrosomes (PubMed:24018379). Localizes to the centrosome throughout cell cycle progression (PubMed:24018379). Localization to centrioles and pericentriolar satellites may be mediated by KIAA0753/OFIP (PubMed:26643951). Widely expressed. Detected in brain, heart, kidney, liver, lung, skeletal muscle, placenta and intestine. Belongs to the CEP43 family.