Teleostean fish chorion is a fibrous structure, consisting of protein members of the ZPB/ZP1 and the ZPC/ZP3 families, which are incorporated as tandemly repeating heterodimers inside chorion fibers.     ///    "Computational analysis of multiple ZPB/ZP1 proteins from several teleostean species, reveals two potential ""aggregation-prone"" sequence segments, forming a specific polymerization interface (AG interface). "    ///    "This, most probably implies that the AG interface of ZPB/ZP1 proteins plays an important role for the formation of the repeating ZPB-ZPC heterodimers, which constitute teleostean chorion fibrils.. "