Xenotropic and polytropic retrovirus receptor 1 (XPR1)

Plays a role in phosphate homeostasis. Mediates phosphate export from the cell (PubMed:23791524, PubMed:25938945).

Binds inositol hexakisphosphate (Ins6P) and similar inositol polyphosphates, such as 5-diphospho-inositol pentakisphosphate (5- InsP7); these are important intracellular signaling molecules (PubMed:27080106). .