CatSper1

CatSper1, is a is_associated_with::protein which in humans is encoded by the CATSPER1 is_associated_with::gene. CatSper1 is a member of the is_associated_with::cation channels of sperm family of protein. The four proteins in this family together form a Ca2+-permeant is_associated_with::ion channel specific essential for the correct function of sperm cells.

Function
Calcium ions play a primary role in the regulation of sperm motility. This gene belongs to a family of putative cation channels that are specific to is_associated_with::spermatozoa and localize to the is_associated_with::flagellum. The protein family features a single repeat with six membrane-spanning segments and a predicted calcium-selective pore region.