Predicted to enable small GTPase binding activity. Predicted to be involved in several processes, including centriole-centriole cohesion; cilium organization; and regulation of cilium assembly. Predicted to act upstream of or within cell differentiation and spermatogenesis. Located in centriole; centrosome; and sperm flagellum. Part of ciliary transition fiber. Is expressed in several structures, including early conceptus; inner ear; liver; reproductive system; and stomach. Orthologous to human ODF2 (outer dense fiber of sperm tails 2). [provided by Alliance of Genome Resources, Apr 2022]