Predicted to enable serine-type endopeptidase inhibitor activity. Predicted to be involved in negative regulation of endopeptidase activity. Predicted to be active in extracellular space. Is expressed in several structures, including esophagus; liver lobe; oral epithelium; and skin. Orthologous to human SERPINB10 (serpin family B member 10). [provided by Alliance of Genome Resources, Apr 2022]