Plasma Membrane Targeting of Endogenous NKCC2 in COS7 Cells Bypasses Functional Golgi Cisternae and Complex N-Glycosylation.

NaK2Cl co-transporters (NKCCs) effect the electroneutral movement of Na-K and 2Cl ions across the plasma membrane of vertebrate cells. There are two known NKCC isoforms, NKCC1 () and NKCC2 (). NKCC1 is a ubiquitously expressed transporter involved in cell volume regulation, Cl homeostasis and epithelial salt secretion, whereas NKCC2 is abundantly expressed in kidney epithelial cells of the thick ascending loop of Henle, where it plays key roles in NaCl reabsorption and electrolyte homeostasis.