Date published: 2026-5-24

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PI-9 Antibody (F-6): sc-390501

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Datasheets
  • PI-9 Antibody (F-6) is a mouse monoclonal IgG1 κ provided at 200 µg/ml
  • raised against amino acids 77-320 mapping within an internal region of PI-9 of mouse origin
  • PI-9 Antibody (F-6) is recommended for detection of PI-9 of mouse origin by WB, IP, IF and ELISA
  • Anti-PI-9 Antibody (F-6) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP, m-IgG1 BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for PI-9 Antibody (F-6) for WB applications. These reagents are now offered in bundles with PI-9 Antibody (F-6) (see ordering information below).
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    PI-9 Antibody (F-6) is a mouse monoclonal IgG1 kappa light chain antibody that detects PI-9 of mouse origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). PI-9 (F-6) antibody is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. Proteinase inhibitor-9 (PI-9), also known as cytoplasmic antiproteinase 3 (CAP3), is a crucial member of the serpin family, specifically the Ovalbumin family, and plays a significant role in regulating serine proteinase activity, particularly granzyme B, which is vital for controlling apoptosis in cytotoxic lymphocytes. The inhibition of granzyme B by PI-9 is particularly important as PI-9 prevents unwanted cell death during immune responses, thereby maintaining tissue integrity and function. PI-9 is predominantly expressed in the placenta, lung, and cytotoxic lymphocytes, and PI-9 presence in the nuclei of human cytotoxic cells, endothelial cells, and epithelial cells highlights PI-9′s role in cellular protection against apoptosis. Notably, PI-9 is rapidly induced by estrogen and upregulated in response to inflammatory stimuli, which further enhances PI-9′s protective role during target cell killing. Additionally, PI-9 expression has been observed in various human and murine tumors, indicating PI-9′s potential relevance in cancer biology and therapy.

    For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

    Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

    LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

    Ordering Information

    Product NameCatalog #UNITPriceQtyFAVORITES

    PI-9 Antibody (F-6)

    sc-390501
    200 µg/ml
    $322.00

    PI-9 Antibody (F-6): m-IgG Fc BP-HRP Bundle

    sc-530172
    200 µg Ab; 10 µg BP
    $361.00

    PI-9 Antibody (F-6): m-IgGκ BP-HRP Bundle

    sc-523560
    200 µg Ab, 40 µg BP
    $361.00

    PI-9 Antibody (F-6): m-IgG1 BP-HRP Bundle

    sc-543907
    200 µg Ab; 20 µg BP
    $361.00

    PI-9 Antibody (F-6) AC

    sc-390501 AC
    500 µg/ml, 25% agarose
    $424.00

    PI-9 Antibody (F-6) HRP

    sc-390501 HRP
    200 µg/ml
    $322.00

    PI-9 Antibody (F-6) FITC

    sc-390501 FITC
    200 µg/ml
    $336.00

    PI-9 Antibody (F-6) PE

    sc-390501 PE
    200 µg/ml
    $349.00

    PI-9 Antibody (F-6) Alexa Fluor® 488

    sc-390501 AF488
    200 µg/ml
    $364.00

    PI-9 Antibody (F-6) Alexa Fluor® 546

    sc-390501 AF546
    200 µg/ml
    $364.00

    PI-9 Antibody (F-6) Alexa Fluor® 594

    sc-390501 AF594
    200 µg/ml
    $364.00

    PI-9 Antibody (F-6) Alexa Fluor® 647

    sc-390501 AF647
    200 µg/ml
    $364.00

    PI-9 Antibody (F-6) Alexa Fluor® 680

    sc-390501 AF680
    200 µg/ml
    $364.00

    PI-9 Antibody (F-6) Alexa Fluor® 790

    sc-390501 AF790
    200 µg/ml
    $364.00

    What is the recommended fixation method for immunofluorescence staining with PI-9 (F-6): sc-390501 monoclonal antibody?

    Asked by: TinTin
    Thank you for your inquiry. We recommend fixing cells for 5 minutes in -10°C methanol and allowing to air dry. The full protocol can be viewed here: https://www.scbt.com/scbt/resources/protocols/immunofluorescence-cell-staining
    Answered by: Technical Support
    Date published: 2017-02-28
    • y_2026, m_5, d_23, h_13CST
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    Rated 5 out of 5 by from Produced great immunofluorescence cytoplasmicProduced great immunofluorescence cytoplasmic staining in methanol-fixed NIH/3T3 cells. -SCBT QC
    Date published: 2015-03-12
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    PI-9 Antibody (F-6) is rated 5.0 out of 5 by 2.
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