Regulation and characterization of the Na+/H+ exchanger

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Abstract
The Na+/H+ exchanger is a ubiquitous protein present in all mammalian cell types that functions to remove one intracellular H+ for one extracellular Na+. Several isoforms of the protein exist, which are referred to as NHE1 to NHE6 (for Na+/H+ exchanger one through six). The NHE1 protein was the first isoform cloned and studied in a variety of systems. This review summarizes recent papers on this protein, particularly those that have examined regulation of the protein and its expression and activity.Key words: cation translocation, intracellular pH, membrane protein, Na+/H+ antiporter, protein phosphorylation, protein-protein interaction.

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