CatSper3, is a protein which in humans is encoded by the CATSPER3gene.1234 CatSper3 is a member of the cation channels of sperm family of proteins. The four proteins in this family together form a Ca2+-permeant ion channel specific essential for the correct function of sperm cells.5
^Clapham DE, Garbers DL (December 2005). "International Union of Pharmacology. L. Nomenclature and structure-function relationships of CatSper and two-pore channels". Pharmacol. Rev.57 (4): 451–4. doi:10.1124/pr.57.4.7. PMID16382101.