Inhibitor of HGFAC . Also inhibits plasmin, and plasma and tissue kallikrein . Inhibits serine protease activity of TMPRSS13 (, ). Inhibits serine protease activity of ST14/matriptase in vitro .
Subcellular locations: Cell membrane, Cytoplasm
Expressed in placenta, kidney, pancreas, prostate, testis, thymus, and trachea.