<unk> also known as folate receptor 4, folate receptor delta or IZUMO1R is a protein that in humans is encoded by the FOLR4 gene.<unk> is a member of the folate receptor family and is GPI-anchored to the plasmalemma of the mammalian egg cell that recognizes its sperm-riding counterpart, IZUMO1, and facilitates fertilization. The protein was named after<unk>  the Roman goddess of fertility and marriage. After the initial fertilisation stage, a sudden decrease of<unk> from the egg cell surface occurs and<unk> becomes virtually undetectable after just 40 minutes. Still, after fertilization via intracytoplasmic sperm injection, the egg cell does not lose cell-surface expression of<unk>  which suggests that<unk> contributes to the prevention of polyspermy. Mice lacking<unk> on the surface of their egg cells are infertile because their egg cells do not fuse with normal sperm, demonstrating<unk> s essential role in the fertility of female mice.
Juno 
Jama
Nice
Koi 
Samu
Riken
Konzo
Higi