Predicted to enable voltage-gated calcium channel activity. Predicted to be involved in flagellated sperm motility; sodium ion transport; and sperm capacitation. Predicted to be located in endoplasmic reticulum. Predicted to be part of CatSper complex. Predicted to be active in acrosomal vesicle. Orthologous to human CATSPER3 (cation channel sperm associated 3). [provided by Alliance of Genome Resources, Apr 2022]