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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

NHERF: targeting and trafficking membrane proteins.

Vectorial ion transport initiated by Na+/H+ exchanger isoform 3 (NHE3) mediates the reabsorption of NaCl and NaHCO(3) in renal proximal tubule cells. NHE3 activity is modulated by numerous physiological stimuli. Biochemical and cellular experiments identified Na+/H+ exchanger regulatory factor (NHERF) as a protein cofactor essential for cAMP- mediated inhibition of NHE3 activity. Identification of numerous NHERF targets, including several transmembrane receptors and ion transporters, has broadened the role of this PSD-95/Dlg-1, Drososphila disk large/ZO-1 domain-containing adapter protein in membrane physiology. NHERF also associates with members of the ezrin/radixin/moesin family of actin- binding proteins and thus links NHE3 to the actin cytoskeleton. Formation of this multiprotein complex facilitates NHE3 phosphorylation and hormonal control of Na+/H+ exchange. NHERF also plays a critical role in targeting transport proteins to apical membranes. Moreover, the NHERF signaling complex functions as a regulatory unit to control endocytosis and internal trafficking of membrane proteins. This article reviews the new evidence that implicates NHERF in wider aspects of epithelial membrane biology.[1]


  1. NHERF: targeting and trafficking membrane proteins. Shenolikar, S., Weinman, E.J. Am. J. Physiol. Renal Physiol. (2001) [Pubmed]
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