Na(+)/H(+) exchange regulatory cofactor NHE-RF3 (PDZK1)

A scaffold protein that connects plasma membrane proteins and regulatory elements, regulating their surface expression in epithelial cells apical domains. May be involved in the coordination of a diverse selection of regulatory processes for ion transport and second messenger cascades.

In complex with SLC9A3R1, may cluster proteins that are functionally determined in a mutual fashion and modulate the trafficking and the action of the associated membrane proteins. May potentiate the CFTR chloride channel activity.