Acts upstream of or within axonemal central apparatus assembly and epithelial cilium movement involved in extracellular fluid movement. Located in axonemal central apparatus. Is expressed in several structures, including alimentary system; genitourinary system; nasal cavity respiratory epithelium; respiratory system; and spinal cord. Human ortholog(s) of this gene implicated in spermatogenic failure. Orthologous to human SPAG17 (sperm associated antigen 17). [provided by Alliance of Genome Resources, Apr 2022]