Required during ciliogenesis for tubulin glutamylation in cilium. Probably acts by participating in the transport of tubulin polyglutamylases between the basal body and the cilium. Localizes mainly to the cilium basal body and in primary cilia. Expressed in various ciliary organs, including Kupffer's vesicle, ear and heart, as well as brain and kidney. Embryos display peripheral heart edema and tail defects along with ciliopathy-related phenotypes, including hydrocephalus, abnormal ear otolith formation and smaller eyes. Belongs to the CEP41 family.