Amiloride-sensitive sodium channel subunit beta

Definition:

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. Plays an essential role in electrolyte and blood pressure homeostasis, but also in airway surface liquid homeostasis, which is important for proper clearance of mucus. Controls the reabsorption of sodium in kidney, colon, lung and sweat glands. Also plays a role in taste perception.

References:

[1]. F J McDonald, et al. Cloning and expression of the beta- and gamma-subunits of the human epithelial sodium channel. Am J Physiol. 1995 May;268(5 Pt 1):C1157-63. [Content Brief]

[2]. N Voilley, et al. Cloning, chromosomal localization, and physical linkage of the beta and gamma subunits (SCNN1B and SCNN1G) of the human epithelial amiloride-sensitive sodium channel. Genomics. 1995 Aug 10;28(3):560-5. [Content Brief]

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