Predicted to enable receptor antagonist activity and transforming growth factor beta binding activity. Acts upstream of or within several processes, including negative regulation of DNA binding activity; roof of mouth development; and transforming growth factor beta receptor signaling pathway. Located in extracellular space. Is expressed in several structures, including central nervous system; genitourinary system; limb; liver; and lung. Orthologous to human WFIKKN2 (WAP, follistatin/kazal, immunoglobulin, kunitz and netrin domain containing 2). [provided by Alliance of Genome Resources, Apr 2022]