Predicted to enable serine-type endopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity and regulation of cell adhesion. Predicted to act upstream of or within negative regulation of peptidase activity. Located in collagen-containing extracellular matrix. Used to study Shwachman-Diamond syndrome. Orthologous to human SERPINI2 (serpin family I member 2). [provided by Alliance of Genome Resources, Apr 2022]