Channelpedia

PubMed 18649274


Referenced in Channelpedia wiki pages of: none

Automatically associated channels: Slo1 , Slo3



Title: Ion channels that control fertility in mammalian spermatozoa.

Authors: Betsy Navarro, Yuriy Kirichok, Jean-Ju Chung, David E Clapham

Journal, date & volume: Int. J. Dev. Biol., 2008 , 52, 607-13

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/18649274


Abstract
Whole-cell voltage clamp of mammalian spermatozoa was first achieved in 2006. This technical advance, combined with genetic deletion strategies, makes unambiguous identification of sperm ion channel currents possible. This review summarizes the ion channel currents that have been directly measured in mammalian sperm, and their physiological roles in fertilization. The predominant currents are a Ca2+-selective current requiring expression of the 4 mCatSper genes, and a rectifying K+ current with properties most similar to mSlo3. Intracellular alkalinization activates both channels and induces hyperactivated motility.