Sodium permeable non-voltage-sensitive ion channel inhibited by the diuretic amiloride. Mediates the electrodiffusion of the luminal sodium (and water, which follows osmotically) through the apical membrane of epithelial cells. Controls the reabsorption of sodium in kidney, colon, lung and sweat glands. Also plays a role in taste perception (By similarity).
Giraldez, Afonso-Oramas, Cruz-Muros, Garcia-Marin, Pagel, González-Hernández, Alvarez de la Rosa: "Cloning and functional expression of a new epithelial sodium channel delta subunit isoform differentially expressed in neurons of the human and monkey telencephalon." in: Journal of neurochemistry, Vol. 102, Issue 4, pp. 1304-15, (2007) (PubMed).