Predicted to enable serine-type endopeptidase inhibitor activity. Involved in cellular response to BMP stimulus and negative regulation of neural precursor cell proliferation. Located in plasma membrane. Human ortholog(s) of this gene implicated in congenital secretory sodium diarrhea 3. Orthologous to human SPINT2 (serine peptidase inhibitor, Kunitz type 2). [provided by Alliance of Genome Resources, Apr 2022]