Predicted to enable serine-type endopeptidase activity. Predicted to be involved in proteolysis. Predicted to be located in cytoplasmic vesicle and extracellular region. Predicted to be active in extracellular space. Is expressed in bone marrow; brain; genitourinary system; and submandibular gland. Orthologous to human PRSS40A (serine protease 40A (pseudogene)) and PRSS40B (serine protease 40B (pseudogene)). [provided by Alliance of Genome Resources, Apr 2022]