Essential for sperm motility and male fertility (By similarity). Plays an important role in sperm motility by regulating the organization and function of the mitochondria and is also required for correct sperm midpiece assembly (By similarity).
Mitochondrion outer membrane . Mitochondrion . Cell projection, cilium, flagellum . Localizes to the midpiece of the sperm flagellum. .
Expressed specifically in testis.