Receptor for IZUMO1 present at the cell surface of oocytes (oolemma), which is essential for species-specific gamete recognition and fertilization. The IZUMO1:IZUMO1R/JUNO interaction is a necessary adhesion event between sperm and egg that is required for fertilization but is not sufficient for cell fusion. The ligand-receptor interaction probably does not act as a membrane 'fusogen'. Does not bind folate.
Folate receptor 4; folate receptor 4 (delta); folate receptor 4 (delta) homolog (mouse); Folate receptor delta; Folate-binding protein 3; Folbp3; FR-delta; IZUMO1 receptor protein JUNO; probable folate receptor delta; Sperm-egg fusion protein Juno