Predicted to enable acrosin binding activity and identical protein binding activity. Predicted to be a structural constituent of egg coat. Predicted to be involved in binding activity of sperm to zona pellucida; humoral immune response mediated by circulating immunoglobulin; and prevention of polyspermy. Predicted to be located in several cellular components, including egg coat; inclusion body; and multivesicular body. Orthologous to human ZP2 (zona pellucida glycoprotein 2). [provided by Alliance of Genome Resources, Apr 2022]