Predicted to enable G protein-coupled receptor activity and calcium ion binding activity. Predicted to act upstream of or within G protein-coupled receptor signaling pathway; cell surface receptor signaling pathway; and homophilic cell adhesion via plasma membrane adhesion molecules. Predicted to be located in plasma membrane. Is expressed in ectoderm; nervous system; pharyngeal arch; and visual system. Orthologous to human CELSR2 (cadherin EGF LAG seven-pass G-type receptor 2).