Centriole-enriched microtubule-binding protein involved in centriole biogenesis. In collaboration with CEP295 and POC1B, is required for the centriole-to-centrosome conversion by ensuring the formation of bona fide centriole wall. Functions as a linker component that maintains centrosome cohesion. Associates with CROCC and regulates its stability and localization to the centrosome. Interacts with CROCC. Interacts with POC1B; the interaction is direct and recruits POC1B to centriolar microtubules. Binds to centriolar microtubules. Localizes to the proximal end of mother and daughter centrioles.