|Calculated MW||42404 Da|
|Application & Usage||Western blotting (2-4 µg/ml) and Immunohistochemistry (20 µg/ml). It recognizes 42 kDa native human PI-9 and the 63 kDa PI-9 complexed to granzyme B. Reactivity to other species has not been tested.|
|Other Names||CAP3 CAP3 Cytoplasmic antiase3 PI9 Protease inhibitor9 ovalbumin type Serpin B9 Serine or Cysteine ase Inhibitor|
|Formulation||100 µg (0.5 mg/ml) mouse monoclonal antibody from culture supernatant diluted in phosphate-buffered saline (PBS) containing 50% glycerol, 1% BSA, and 0.02% thimerosal.|
|Handling||The antibody solution should be gently mixed before use.|
|Reconstitution & Storage||-20 °C|
|Precautions||Proteinase Inhibitor 9 (PI-9) Antibody (Clone PI9-17) is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Granzyme B inhibitor.|
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Proteinase inhibitor 9 (PI-9, also designated cytoplasmic antiproteinase 3, or CAP3) is a 42 kDa member of the ovalbumin family of serpins that is expressed in placenta, lung and cytotoxic lymphocytes. PI-9 is a potent inhibitor of granzyme B and of granzyme B-mediated apoptosis, and is also an inhibitor of capase-1 and, to a smaller extent, caspase-4 and caspase-8. PI-9 expression is also upregulated in response to inflammatory stimuli. This upregulation protects cells from apoptosis induced by endogenously expressed or released granzyme B, particulary during target cell killling.
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