Predicted to enable antigen binding activity. Predicted to be an extracellular matrix structural constituent. Predicted to be involved in neutrophil migration. Predicted to act upstream of or within antigen transcytosis by M cells in mucosal-associated lymphoid tissue. Located in zymogen granule membrane. Is anchored component of external side of plasma membrane. Orthologous to human GP2 (glycoprotein 2). [provided by Alliance of Genome Resources, Apr 2022]