Microtubule-binding protein required for ciliogenesis (PubMed:28235840). May function in ciliogenesis by mediating the transport of proteins like BBS4 to the cilium, but also through the organization of the centriolar satellites (PubMed:28235840). Plays a role in retina morphogenesis and/or homeostasis (By similarity). Homodimer; disulfide-linked (By similarity). Interacts with CEP290 (PubMed:28235840). Interacts with PCM1 (PubMed:28235840). Interacts with ARMC9, TOGARAM1, CSPP1 and CEP104 (PubMed:32453716). Restricted to the centrosomes and the spindle microtubules during mitosis (PubMed:28235840). Enriched in the inner segment of the photoreceptor (PubMed:19777273). Widely expressed (at protein level) (PubMed:28235840). Expressed in retina, mainly in photoreceptors but also in outer plexiform and ganglion cell layers (at protein level) (PubMed:19777273). Truncated N-terminus. Truncated N-terminus.