Predicted to enable protein-membrane adaptor activity. Predicted to be involved in nuclear envelope organization and spermatid development. Predicted to be located in nuclear inner membrane and sperm connecting piece. Predicted to be part of meiotic nuclear membrane microtubule tethering complex. Predicted to be active in nuclear envelope. Human ortholog(s) of this gene implicated in spermatogenic failure 16. Orthologous to human SUN5 (Sad1 and UNC84 domain containing 5). [provided by Alliance of Genome Resources, Apr 2022]