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Anti-Granzyme B antibody [EPR8260] ab134933 is a rabbit monoclonal antibody that is used in Granzyme B western blotting, IHC and flow cytometry. Suitable for human samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Specificity and sensitivity confirmed in IHC with multi-tissue microarray (TMA) validation


Images

Flow Cytometry - Anti-Granzyme B antibody [EPR8260] (AB134933), expandable thumbnail
  • Western blot - Anti-Granzyme B antibody [EPR8260] (AB134933), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (AB134933), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (AB134933), expandable thumbnail
  • OI-RD Scanning - Anti-Granzyme B antibody [EPR8260] (AB134933), expandable thumbnail

Publications

Key facts

Isotype

IgG

Host species

Rabbit

Storage buffer

pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA

Form

Liquid

Clonality

Monoclonal

Immunogen

  • The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
IHC-PFlow CytWB
Human
Tested
Tested
Tested

Tested
Tested

Species

Human

Dilution info

1/100 - 1/250

Notes

For antigen retrieval: heat up to 98 degrees C, below boiling, and then let cool for 10-20 min. Use of an HRP/AP polymerized secondary antibody is recommended.

Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.

Tested
Tested

Species

Human

Dilution info

1/100

Notes

-

Tested
Tested

Species

Human

Dilution info

1/1000

Notes

-

Associated Products

Select an associated product type

11 products for Alternative Product

4 products for Alternative Version

Target data

Function

Abundant protease in the cytosolic granules of cytotoxic T-cells and NK-cells which activates caspase-independent pyroptosis when delivered into the target cell through the immunological synapse (PubMed:1985927, PubMed:3262682, PubMed:3263427). It cleaves after Asp (PubMed:1985927, PubMed:8258716). Once delivered into the target cell, acts by catalyzing cleavage of gasdermin-E (GSDME), releasing the pore-forming moiety of GSDME, thereby triggering pyroptosis and target cell death (PubMed:31953257, PubMed:32188940). Seems to be linked to an activation cascade of caspases (aspartate-specific cysteine proteases) responsible for apoptosis execution. Cleaves caspase-3, -9 and -10 (CASP3, CASP9 and CASP10, respectively) to give rise to active enzymes mediating apoptosis (PubMed:9852092). Cleaves and activates CASP7 in response to bacterial infection, promoting plasma membrane repair (By similarity).

Alternative names

CGL1, CSPB, CTLA1, GRB, GRB, CTLA1, CSPB, CGL1, GZMB, Granzyme B, C11, CTLA-1, Cathepsin G-like 1, Cytotoxic T-lymphocyte proteinase 2, Fragmentin-2, Granzyme-2, Human lymphocyte protein, SECT, T-cell serine protease 1-3E, CTSGL1, Lymphocyte protease, HLP

Recommended products

Anti-Granzyme B antibody [EPR8260] ab134933 is a rabbit monoclonal antibody that is used in Granzyme B western blotting, IHC and flow cytometry. Suitable for human samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Specificity and sensitivity confirmed in IHC with multi-tissue microarray (TMA) validation

Key facts

Isotype

IgG

Form

Liquid

Clonality

Monoclonal

Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number

EPR8260

Purification technique

Affinity purification Protein A

Dissociation constant

7.8 x 10-11 M

Concentration
Loading...

Storage

Shipped at conditions

Blue Ice

Appropriate short-term storage duration

1-2 weeks

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

-20°C

Aliquoting information

Upon delivery aliquot

Storage information

Stable for 12 months at -20°C

Notes

Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

Granzyme B also known as GZMB GB11 or granzyme B protein is a serine protease with a molecular mass of approximately 32 kDa. It is expressed mainly in cytotoxic T lymphocytes and natural killer (NK) cells. This enzyme plays a mechanical role in inducing apoptosis in target cells serving as an effector protein in the immune system's defense against virally infected cells or transformed cancer cells. The activity of granzyme B relies on its ability to cleave after aspartate residues in substrate proteins leading to the activation of apoptotic pathways.

Biological function summary

Granzyme B participates prominently in the immune response by activating caspases particularly caspase-3 which promotes the breakdown of cellular components necessary for apoptosis. Granzyme B does not function in isolation but acts in concert with other immune system factors such as perforin to effectively induce cell death. Perforin creates pores in the target cell membrane allowing granzyme B to enter and instigate the apoptosis sequence. The enzyme also contributes to the processing of cytokines which enhances the immune response further.

Pathways

Studies have determined that granzyme B is critical in the apoptosis pathway particularly in the granule exocytosis pathway. It closely interacts with proteins such as perforin and other granzymes to mediate apoptosis in target cells. Granzyme B also plays a role in the inflammatory response and can influence pathways associated with cytotoxic T cell signaling. Its pathway interactions ensure effective elimination of damaged or infected cells maintaining tissue homeostasis.

Associated diseases and disorders

Granzyme B has associations with autoimmune diseases and cancer. Abnormally high levels of granzyme B can contribute to tissue damage and inflammation in autoimmune conditions like rheumatoid arthritis. In the context of cancer granzyme B aids in tumor surveillance and destruction when functioning correctly but impaired granzyme B activity can lead to evasion of immune detection by cancerous cells. Perforin also plays a role in these conditions closely working with granzyme B to either protect against or drive disease progression.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

6 product images

  • Flow Cytometry - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    Flow Cytometry - Anti-Granzyme B antibody [EPR8260] (ab134933)

    Flow cytometric analysis of 4% paraformaldehyde fixed No-GFP-CD16.NK-92 Human Natural Killer cells labeling Granzyme B with ab134933 at 1/100 dilution (Red) compared with an Isotype control Rabbit monoclonal IgG (Rabbit IgG, monoclonal [EPR25A] - Isotype Control ab172730) (Black) and an unlabelled control (cells without incubation with primary antibody and secondary antibody) (Blue). Goat anti rabbit IgG Alexa Fluor® 488 (Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) preadsorbed ab150081), at 1/5000 dilution was used as the secondary antibody.

  • Western blot - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    Western blot - Anti-Granzyme B antibody [EPR8260] (ab134933)

    Negative control: Jurkat (PMID:18437383, 25168906).

    Blocking and diluting buffer: 5% NFDM/TBST

    All lanes: Western blot - Anti-Granzyme B antibody [EPR8260] (ab134933) at 1/1000 dilution

    Lane 1: KARPAS-299 (human anaplastic large cell lymphoma), whole cell lysate at 20 µg

    Lane 2: Jurkat (human T cell leukemia T lymphocyte), whole cell lysate at 20 µg

    Lane 3: SR (human pleural effusion lymphoblast, whole cell lysate at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/10000 dilution

    Predicted band size: 28 kDa

    Observed band size: 28 kDa

    Exposure time: 48s

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933)

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of Human tonsil tissue sections labeling Granzyme B with Purified ab134933 at 1:250 dilution (2.96 μg/ml). Heat mediated antigen retrieval was performed using Antigen Retrieval Buffer (100X Tris-EDTA Buffer, pH 9.0) ab93684 (Tris/EDTA buffer, pH 9.0). ImmunoHistoProbe one step HRP Polymer (ready to use)was used as the secondary antibody. Negative control:PBS instead of the primary antibody. Hematoxylin was used as a counterstain.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933)

    Immunohistochemical analysis of paraffin-embedded, formalin-fixed Human Hodgkin's lymphoma tissue, labelling Granzyme B using unpurified ab134933 at a 1/100 dilution. Heat mediated antigen retrieval was performed with citrate buffer pH 6 before commencing with IHC staining protocol.

  • OI-RD Scanning - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    OI-RD Scanning - Anti-Granzyme B antibody [EPR8260] (ab134933)

    We have systematically measured KD (the equilibrium dissociation constant between the antibody and its antigen), of more than 840 recombinant antibodies to assess not only their individual KD values but also to see the average affinity of antibody.
    Based on the comparison with published literature values for mouse monoclonal antibodies, Recombinant antibodies appear to be on average 1-2 order of magnitude higher affinity.

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Granzyme B antibody [EPR8260] (ab134933)

    Tissue Microarrays stained for "Anti-Granzyme B antibody [EPR8260]" using "ab134933"in immunohistochemical analysis. This table provides a detailed overview of positive (tick mark) and negative (cross mark) staining per sample type tested. The sections were pre-treated using Heat mediated antigen retrieval using Bond™ Epitope Retrieval Solution 2 (pH 9.0) for 20 minutes. The sections were incubated with ab134933 for 30 mins at room temperature followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101). The immunostaining was performed on a Leica Biosystems BOND® RX instrument.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can:

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