Important for structural integrity of the central apparatus in the sperm tail and for flagellar motility.
Cytoplasm, cytoskeleton . Cell projection, cilium, flagellum . Cytoplasm, cytoskeleton, cilium axoneme . Associated with microtubules. Detected on the sperm flagellum (PubMed:10493827). Localizes in the cilium axoneme in a SPEF1-dependent manner (By similarity). .
Highly expressed in testis.