Induces gamma-tubulin accumulation at cell-cell junctions and may direct the assembly of robust microtubule arrays during cell elongation. May regulate the surface expression of amiloride-sensitive sodium channel. Interacts with F-actin (By similarity). Interacts with scnn1a. Kidney, proximal intestine, oocytes, and to a lesser extent in the distal intestine, stomach and eye. Epithelial cells of the cement gland. The ASD1 domain mediates F-actin binding. Belongs to the shroom family.