Enables chaperone binding activity. Acts upstream of or within axonemal dynein complex assembly and flagellated sperm motility. Located in cytoplasm. Is expressed in spermatid; spermatocyte; and testis. Human ortholog(s) of this gene implicated in primary ciliary dyskinesia 36. Orthologous to human DNAAF6 (dynein axonemal assembly factor 6). [provided by Alliance of Genome Resources, Apr 2022]