Plays a role in the formation of the central complex of ciliary and flagellar axonemes.
Cell projection, cilium, flagellum . Localizes both to epithelial motile cilium and the sperm flagellum (PubMed:27486783). In spermatids, rapidly enriched in the coupling apparatus with the elongation of the spermatid. Tightly attached to the implantation fossa during the maturation of the spermatid. In mature spermatzoa evenly distributed along the flagellum (By similarity). .
Specifically expressed in testis and trachea.