Predicted to enable serine-type endopeptidase activity. Predicted to be involved in proteolysis. Predicted to be located in extracellular region. Predicted to be active in extracellular space. Is expressed in embryo endoderm; gut; liver; mitral valve; and yolk sac. Human ortholog(s) of this gene implicated in thrombophilia due to thrombin defect and thyroid gland papillary carcinoma. Orthologous to human HABP2 (hyaluronan binding protein 2). [provided by Alliance of Genome Resources, Apr 2022]