Predicted to enable tubulin binding activity. Acts upstream of or within spermatogenesis. Located in centrosome; sperm midpiece; and sperm principal piece. Part of intraciliary transport particle B. Human ortholog(s) of this gene implicated in short-rib thoracic dysplasia 19 with or without polydactyly. Orthologous to human IFT81 (intraflagellar transport 81). [provided by Alliance of Genome Resources, Apr 2022]