Tags: Protein.
Zona pellucida sperm-binding protein 2 is a protein that in humans is encoded by the ZP2 gene.The zona pellucida is an extracellular matrix that surrounds the oocyte and early embryo. It is composed primarily of three or four glycoproteins with various functions during fertilization and preimplantation development. The protein encoded by this gene is a structural component of the zona pellucida and functions in secondary binding and penetration of acrosome-reacted spermatozoa.