Protease inhibitor that inhibits trypsin and trypsin-like serine proteases (in vitro). Inhibits plasmin and thrombin with lower efficiency (in vitro).
Subcellular locations: Secreted
Subcellular locations: Cytoplasm
Subcellular locations: Cytoplasm
Subcellular locations: Cytoplasm
Subcellular locations: Cytoplasm
Subcellular locations: Cytoplasm
Subcellular locations: Membrane
Highly expressed in normal germinal center (GC) B-cells and GC B-cell-derived malignancies.