SERPINB9 antibody
Principal name
SERPINB9 antibody
Alternative names for SERPINB9 antibody
PI9, PI-9, Serpin B9, Cytoplasmic antiproteinase 3, CAP-3, CAP3, Proteinase inhibitor 9
SwissProt ID
P50453 (Human)
Gene ID
5272 (SERPINB9)
Ncbi ID
Available reactivities
Available hosts
Available applications
Enzyme Immunoassay (E), Western blot / Immunoblot (WB), Flow Cytometry (F), Paraffin Sections (P), ELISA (detection) (E(detection)), Frozen Sections (C), Immunocytochemistry/Immunofluorescence (ICC/IF), Immunoprecipitation (IP)
Background of SERPINB9 antibody
PI-9 is a 42kDa intracellular nucleocytoplasmic serpin expressed in cytotoxic lymphocytes (CTLs), natural killer (NK) cells, monocyte-derived dendritic cells (DCs), and to a lesser extent in B cells and myeloid cells. Granzyme B (grB) is a serine protease highly expressed by CTLs and NK cells, which is endocytosed by virusinfected and malignant target cells. The subsequent release of grB from the endocytic vesicles into the cytoplasm of the target cells, triggers grB-mediated apoptosis, through cleavage of various cytoplasmic or nuclear proteins. PI-9, up-regulated in response to grB production and degranulation, has been identified as a potent inhibitor of Granzyme B-mediated apoptosis, providing a vital self-protection mechanism against the premature apoptosis of CTLs and NK cells by grB, which may escape into the cytoplasm of the effector cells themselves.
General readings
Jiang X, Ellison SJ, Alarid ET, Shapiro DJ.
Interplay between the levels of estrogen and estrogen receptor controls the level of the granzyme inhibitor, proteinase inhibitor 9 and susceptibility to immune surveillance by natural killer cells.
Oncogene. 2007 Jan 22
PMID: 17237823







Primary Antibodies
| Catalog No. | Host | Iso. | Clone | Pres. | React. | Applications | |
|---|---|---|---|---|---|---|---|
| TA303212 | SERPINB9 antibody |
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| Goat Polyclonal Antibody against SERPINB9 | |||||||
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Goat | Aff - Purified | Hu, Ms, Rt | WB |
0.1 mg /
€360.00
|
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| OriGene Technologies, Inc. | |||||||
| TA312970 | SERPINB9 antibody |
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| Rabbit polyclonal anti-SERPINB9 antibody | |||||||
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Rabbit | IgG | Purified | Hu, Ms | E, P, WB |
0.1 ml /
€335.00
|
|
| OriGene Technologies, Inc. | |||||||
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| TA318921 | SERPINB9 antibody |
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| Mouse monoclonal anti-Proteinase Inhibitor (PI-9) antibody, clone PI9-17 | |||||||
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Mouse | IgG1 | PI9-17 | Purified | Hu | P, WB |
0.1 mg /
€415.00
|
| OriGene Technologies, Inc. | |||||||
| AM01199PU-N | SERPINB9 antibody |
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Mouse | IgG1 | 7D8 | Purified | Hu | F, P, WB |
0.1 mg /
€330.00
|
| OriGene Technologies GmbH | |||||||
Proteins & Growth Factors
| Catalog No. | Species | Pres. | Purity | Source | |
|---|---|---|---|---|---|
| TP300645 | SERPINB9 |
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| Recombinant protein of human serpin peptidase inhibitor, clade B (ovalbumin), member 9 (SERPINB9) | |||||
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Human | > 80 % Preparation: Recombint protein was captured through anti-DDK affinity column followed by conventiol chromatography steps. Purity Detail: > 80% as determined by SDS-PAGE and Coomassie blue staining. |
HEK293 cells |
20 µg /
€748.00
|
|
| OriGene Technologies, Inc. | |||||








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