Human Granzyme B Alexa Fluor® 488-conjugated Antibody Summary
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Granzyme B in NK‑92 Human Cell Line by Flow Cytometry. NK‑92 human natural killer lymphoma cell line was stained with Mouse Anti-Human Granzyme B Alexa Fluor® 488‑conjugated Monoclonal Antibody (Catalog # IC2906G, filled histogram) or isotype control antibody (Catalog # IC003G, open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.
Preparation and Storage
- 12 months from date of receipt, 2 to 8 degreesC as supplied.
Background: Granzyme B
Granzyme B is a member of the granzyme family of the serine proteases found specifically in the cytotoxic granules of cytotoxic T lymphocytes (CTL) and natural killer (NK) cells (1, 2). Granzyme B plays an essential role in granule-mediated apoptosis and may have additional roles in rheumatoid arthritis and in bacterial and viral infections (3). It activates various caspases and cleaves proteins such as aggrecan (3). Human Granzyme B is synthesized as a precursor (247 residues) with a signal peptide (residues 1-18), a pro peptide (residues 19-20), and a mature chain (residues 21-247) (4-6). The recombinant human (rh) Granzyme B consisting of residues 19-247 was expressed and purified. After being activated by active cathepsin C, rhGranzyme B cleaves a thioester substrate described previously (3).
- Kam, C-M. et al. (2000) Biochim. Biophys. Acta 1477:307.
- Smyth, M.J. et al. (1996) J. Leukoc. Biol. 60:555.
- Froelich, C.J. (2004) in Handbook of Proteolytic Enzymes, Barrett, A.J. et al., eds., pp. 1549 - 1552.
- Schmid, J. and C. Weissman (1987) J. Immunol. 139:250.
- Caputo, A. et al. (1988) J. Biol. Chem. 263:6363.
- Trapani, J.A. et al. (1988) Proc. Natl. Acad. Sci. USA 85:6924.
Citation for Human Granzyme B Alexa Fluor® 488-conjugated Antibody
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.
1 Citation: Showing 1 - 1
The IL-7R alpha pathway is quantitatively and functionally altered in CD8 T cells in multiple sclerosis.
Authors: Kreft KL, Verbraak E, Wierenga-Wolf AF, van Meurs M, Oostra BA, Laman JD, Hintzen RQ
J. Immunol., 2012;188(4):1874-83.
Sample Types: Whole Cells
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