Involved in flagellated sperm motility and spermatid development. Predicted to be part of intraciliary transport particle A. Is expressed in 4th ventricle; choroid plexus; lateral ventricle choroid plexus; and olfactory epithelium. Human ortholog(s) of this gene implicated in spermatogenic failure 37. Orthologous to human TTC21A (tetratricopeptide repeat domain 21A). [provided by Alliance of Genome Resources, Apr 2022]