Predicted to enable calcium ion binding activity and inositol 1,3,4,5 tetrakisphosphate binding activity. Predicted to act upstream of or within establishment of body hair planar orientation and negative regulation of protein localization to cell surface. Predicted to be located in cell pole and endosome. Predicted to be integral component of membrane. Orthologous to human ASTN2 (astrotactin 2). [provided by Alliance of Genome Resources, Apr 2022]