Revision 5
Cell Signaling Technology

Orders: 877-616-CELL (2355) [email protected]

Support: 877-678-TECH (8324)

Web: [email protected] cellsignal.com

3 Trask LaneDanversMassachusetts01923USA
For Research Use Only. Not for Use in Diagnostic Procedures.
Applications:

WB, IHC-P

REACTIVITY:

M

SENSITIVITY:

Endogenous

MW (kDa):

55-75

Source/Isotype:

Rabbit IgG

UniProt ID:

#P10820

Entrez-Gene Id:

18646

Product Information

Product Usage Information

This product is the carrier free version of product #31647. All data were generated using the same antibody clone in the standard formulation which contains BSA and glycerol.

This formulation is ideal for use with technologies requiring specialized or custom antibody labeling, including fluorophores, metals, lanthanides, and oligonucleotides. It is not recommended for ChIP, ChIP-seq, CUT&RUN, or CUT&Tag assays. If you require a carrier-free formulation for chromatin profiling, please contact us. Optimal dilutions/concentrations should be determined by the end user.

Formulation

Supplied in 1X PBS, BSA and Azide Free.

For standard formulation of this product see product #31647.

Storage

Store at -20°C. This product will freeze at -20°C so it is recommended to aliquot into single-use vials to avoid multiple freeze/thaw cycles. A slight precipitate may be present and can be dissolved by gently vortexing. This will not interfere with antibody performance.

Specificity / Sensitivity

Perforin (E3W4I) Rabbit mAb (BSA and Azide Free) recognizes endogenous levels of total perforin protein. High expressing cells like CTLL-2 can produce several low molecular weight bands due to degradation of the protein. Non-specific staining was observed in mouse salivary gland by immunohistochemistry.

Species Reactivity:

Mouse

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Gln63 of mouse perforin protein.

Background

Granzymes are a family of serine proteases expressed by cytotoxic T lymphocytes and natural killer (NK) cells and are key components of immune responses to pathogens and transformed cells (1). Granzymes are synthesized as zymogens and are processed into mature enzymes by cleavage of a leader sequence. They are released by exocytosis in lysosome-like granules containing perforin, a membrane pore-forming protein. Granzyme B has the strongest apoptotic activity of all the granzymes as a result of its caspase-like ability to cleave substrates at aspartic acid residues thereby activating procaspases directly and cleaving downstream caspase substrates (2,3).
Perforin is a pore-forming protein that facilitates the entry of cytotoxic serine proteases, such as granzymes, into target cells (4). Perforin is primarily expressed in cytotoxic T lymphocytes and NK cells.

  1. Trapani, J.A. (2001) Genome Biol. 2, REVIEWS 3014.
  2. Lord, S.J. et al. (2003) Immunol. Rev. 193, 31-8.
  3. Trapani, J.A. and Sutton, V.R. (2003) Curr. Opin. Immunol. 15, 533-43.
  4. Catalfamo, M. and Henkart, P.A. (2003) Curr Opin Immunol 15, 522-7.

Species Reactivity

Species reactivity is determined by testing in at least one approved application (e.g., western blot).

Applications Key

WB: Western Blotting IHC-P: Immunohistochemistry (Paraffin)

Cross-Reactivity Key

H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

Trademarks and Patents

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
SignalStain is a registered trademark of Cell Signaling Technology, Inc.
XP is a registered trademark of Cell Signaling Technology, Inc.
All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

Revision 5
#36810

Perforin (E3W4I) Rabbit mAb (BSA and Azide Free)

Western Blotting Image 1: Perforin (E3W4I) Rabbit mAb (BSA and Azide Free) Expand Image
Western blot analysis of various cell lines and mouse activated CD8+ T cells using Perforin (E3W4I) Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). Data were generated using the standard formulation of this product.
Immunohistochemistry Image 1: Perforin (E3W4I) Rabbit mAb (BSA and Azide Free) Expand Image
Immunohistochemical analysis of paraffin-embedded LL/2 syngeneic tumor using Perforin (E3W4I) Rabbit mAb. Data were generated using the standard formulation of this product.
Immunohistochemistry Image 2: Perforin (E3W4I) Rabbit mAb (BSA and Azide Free) Expand Image
Immunohistochemical analysis of paraffin-embedded CT26.WT syngeneic tumor using Perforin (E3W4I) Rabbit mAb (left) compared to concentration matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (right). Data were generated using the standard formulation of this product.
Immunohistochemistry Image 3: Perforin (E3W4I) Rabbit mAb (BSA and Azide Free) Expand Image
Immunohistochemical analysis of paraffin-embedded CTLL-2 cell pellet (left, positive) or 3T3 cell pellet (right, negative) using Perforin (E3W4I) Rabbit mAb. Data were generated using the standard formulation of this product.