Predicted to enable endopeptidase inhibitor activity; protease binding activity; and virus receptor activity. Predicted to be involved in several processes, including autocrine signaling; paracrine signaling; and regulation of cellular protein metabolic process. Predicted to be located in cytoplasmic vesicle; extracellular exosome; and nucleus. Predicted to be active in extracellular space. Orthologous to human SERPINB3 (serpin family B member 3). [provided by Alliance of Genome Resources, Apr 2022]