Loss of residues required for β-arrestin recruitment in the calcium-sensing receptor C-terminal tail may contribute to hypocalcemia.
The calcium-sensing receptor (CaSR) is a family C G protein-coupled receptor (GPCR) with an important role in calcium homeostasis, activating mutations of which cause hypocalcemia. Despite the receptors clinical importance and evidence suggesting β-arrestin-1/2 can modulate CaSR signaling, the residues within CaSR requ...