Abstract
This review focuses on the contribution of the late David Garbers to chemotaxis of sperm, in particular from sea urchin. We will describe his discovery of chemotactic peptides and their cognate receptors, his discovery of a sperm-specific,unique Na+/H+ exchanger that represents a chimera between a solute carrier (SLC) and an ion channel. Finally, we will discuss his contributions to the understanding of cAMP signaling in sperm via soluble adenylyl cyclase (sAC) and its control by Ca2+ ions.
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