功能The mammalian zona pellucida, which mediates species-specific sperm binding, induction of the acrosome reaction and prevents post-fertilization polyspermy, is composed of three to four glycoproteins, ZP1, ZP2, ZP3, and ZP4. ZP4 may act as a sperm receptor.
序列相似性Belongs to the ZP domain family. ZPB subfamily. Contains 1 P-type (trefoil) domain. Contains 1 ZP domain.
结构域The ZP domain is involved in the polymerization of the ZP proteins to form the zona pellucida.
翻译后修饰Proteolytically cleaved before the transmembrane segment to yield the secreted ectodomain incorporated in the zona pellucida.
细胞定位Secreted > extracellular space > extracellular matrix and Cell membrane.