Acts upstream of or within several processes, including flagellated sperm motility; proacrosomal vesicle fusion; and receptor-mediated endocytosis of virus by host cell. Located in trans-Golgi network. Is expressed in gut; nasal cavity epithelium; and nervous system. Orthologous to human KIAA0319L (KIAA0319 like). [provided by Alliance of Genome Resources, Apr 2022]