Involved in spermatogenesis. Located in cytoplasm and sperm connecting piece. Is expressed in central nervous system; dorsal root ganglion; and neural retina. Used to study male infertility and spermatogenic failure 31. Human ortholog(s) of this gene implicated in spermatogenic failure 31. Orthologous to human PMFBP1 (polyamine modulated factor 1 binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]