Maintains epithelial barrier function by recruiting MARVELD2/tricellulin to tricellular tight junctions (tTJs). Crucial for normal hearing by maintaining the structural and functional integrity of tTJs, which are critical for the survival of auditory neurosensory HCs. Mediates fatty acids and lipoproteins-stimulated CCK/cholecystokinin secretion in the small intestine. In the inner ear, may regulate alternative pre-mRNA splicing via binding to TRA2A, TRA2B and SRSF1.
Subcellular locations: Cell membrane, Cell junction, Tight junction, Nucleus, Cytoplasm
Localizes to tricellular tight junctions (tTJs) between epithelial cells.