Predicted to enable endopeptidase inhibitor activity and protease binding activity. Acts upstream of or within embryo implantation. Predicted to be located in extracellular space. Is expressed in liver. Human ortholog(s) of this gene implicated in otitis media. Orthologous to human PZP (PZP alpha-2-macroglobulin like) and A2ML1 (alpha-2-macroglobulin like 1). [provided by Alliance of Genome Resources, Apr 2022]