Predicted to enable cysteine-type endopeptidase inhibitor activity and protease binding activity. Predicted to be involved in negative regulation of endopeptidase activity and negative regulation of keratinocyte apoptotic process. Predicted to act upstream of or within negative regulation of peptidase activity. Predicted to be located in cytosol and nuclear speck. Predicted to be active in extracellular space. Orthologous to human SERPINB13 (serpin family B member 13). [provided by Alliance of Genome Resources, Apr 2022]