MAGUK p55 subfamily member 5 (Mpp5)

May play a role in tight junctions biogenesis and in the establishment of cell polarity in epithelial cells. May modulate SC6A1/GAT1-mediated GABA uptake by stabilizing the transporter.

Required for localization of EZR to the apical membrane of parietal cells and might play a role in the dynamic remodeling of the apical cytoskeleton. .