The Calcineurin Homologous Protein-1 Increases Na+/H+-Exchanger 3 Trafficking via Ezrin Phosphorylation Di Sole F et al. - The Na+/H+-exchanger 3 (NHE3) is essential for regulation of Na+ transport in the renal and intestinal epithelium. Although changes in cell surface abundance control NHE3 function, the molecular signals that regulate NHE3 surface expression are not well defined. These results demonstrate that CHP1 increases NHE3 abundance and constitutive function in a manner dependent on ezrin phosphorylation. [more...]