Recombinant Human Caspase-3 Protein

R&D Systems | Catalog # 707-C3

R&D Systems
Discontinued Product
707-C3 has been discontinued. An alternative/replacement product is available: 707-C3/CF. View all Caspase-3 products.

Key Product Details

Source

E. coli

Accession Number

P42574

Applications

Enzyme Activity
View all Caspase-3 Proteins and Enzymes »

Product Specifications

Source

E. coli-derived human Caspase-3 protein
Ser29-Asp175 (subunit 1) & Ala183-His277 (Asp190Glu) (subunit 2)

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ser29 (subunit 1) & Ala183 (subunit 2)

Predicted Molecular Mass

17 kDa (subunit 1), 11 kDa (subunit 2)

SDS-PAGE

18 kDa and 10 kDa, reducing conditions

Activity

Measured by its ability to cleave the fluorogenic peptide substrate Ac-DEVD-AFC.
The specific activity is >3,000 pmol/min/μg, as measured under the described conditions.

Reviewed Applications

Read 2 reviews rated 4.5 using 707-C3 in the following applications:

Formulation, Preparation, and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 707-C3
Formulation Supplied as a 0.2 μm filtered solution in HEPES, NaCl, DTT and Sucrose with BSA as a carrier protein.
Shipping The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -70 °C as supplied.
  • 3 months, -70 °C under sterile conditions after opening.
Carrier Free: 707-C3/CF
Formulation Supplied as a 0.2 μm filtered solution in HEPES, NaCl, DTT and Sucrose.
Shipping The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -70 °C as supplied.
  • 3 months, -70 °C under sterile conditions after opening.

Background: Caspase-3

Caspase-3 (Cysteine-aspartic acid protease 3/Casp3; also Yama, apopain and CPP32) is a 29 kDa member of the peptidase C14A family of enzymes (1, 2, 3). It is widely expressed and is an integral component of the apoptotic cascade. Caspase-3 is considered to be the major executioner caspase; that is, the primary downstream mediator of apoptotic-associated proteolysis (2, 3, 4). Active Caspase-3 is known to utilize a Cys residue to cleave multiple substrates, including PARP, proIL‑16, PKC-gamma & -delta, procaspases 6, 7 and 9, and beta ‑catenin (1). Human procaspase-3 is a 32 kDa, 277 amino acid (aa) protein (5, 6, 7). Normally, it is an inactive, cytosolic homodimer, but following an upstream signal that activates processing proteases, procaspase-3 undergoes proteolytic cleavage (1, 2, 8, 9). This generates an N-terminal 175 aa p20/20 kDa subunit plus a 102 aa C-terminal p12/12 kDa subunit, followed by further processing of the p20 subunit at Asp28 to generate a final p17 subunit (aa 29‑175) (9). The p17 and p12 subunits noncovalently heterodimerize, and subsequently associate with another p17/p12 heterodimer to form an active antiparallel homodimer. The p17 subunit contains the enzyme active site (aa 161‑165), with an embedded catalytic Cys which is normally nitrosylated and inactive. Full activation requires both proteolytic processing and Cys163 denitrosylation (10). Multiple proteases can use Caspase-3 as a substrate including Caspase-6, -8, and -10, granzyme B, and Caspase-3 itself (9, 11, 12, 13). 

References

  1. Chowdhury, I. et al. (2008) Comp. Biochem. Physiol. B 151:10.
  2. Boatright, K.M. & G.S. Salvesen (2003) Curr. Opin. Cell Biol. 15:725.
  3. Launay, S. et al. (2005) Oncogene 24:5137.
  4. Walsh, J.G. et al. (2008) Proc. Natl. Scad. Sci. USA 105:12815.
  5. Nicholson, D.W. et al. (1995) Nature 376:37.
  6. Tewari, M. et al. (1995) Cell 81:801.
  7. Fernandes-Alnemri, T. et al. (1994) J. Biol. Chem. 269:30761.
  8. Milisav, I. et al. (2009) Apoptosis 14:1070.
  9. Han, Z. et al. (1997) J. Biol. Chem. 272:13432.
  10. Rossig, L. et al. (1999) J. Biol. Chem. 274:6823.
  11. Rank, K.B. et al. (2001) Protein Expr. Purif. 22:258.
  12. Atkinson, E.A. et al. (1998) J. Biol. Chem. 273:21261.
  13. Cohen, G.M. (1997) Biochem. J. 326:1.

Alternate Names

Apopain, CASP3, Caspase3, CPP32, LICE-1, YAMA

Entrez Gene IDs

836 (Human); 12367 (Mouse)

Gene Symbol

CASP3

UniProt

P42574 (Mouse)

Additional Caspase-3 Products

Product Documents for Recombinant Human Caspase-3 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot or batch number in the search box below.

Note: Certificate of Analysis not available for kit components.

Download SDS 707-C3 (with carrier)
Download SDS 707-C3/CF (carrier free)

Product Specific Notices for Recombinant Human Caspase-3 Protein

For research use only

Related Research Areas

Cysteine Proteases and Regulators

Citations for Recombinant Human Caspase-3 Protein

Customer Reviews for Recombinant Human Caspase-3 Protein (2)

4.5 out of 5
2 Customer Ratings
5 Stars
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4 Stars
50%
3 Stars
0%
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1 Stars
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Protocols

View specific protocols for Recombinant Human Caspase-3 Protein (707-C3):

Materials
  • Assay Buffer: 25 mM HEPES, 0.1% (w/v) CHAPS, 10 mM dithiothreitol (DTT), pH 7.5
  • Recombinant Human Caspase-3 (rhCaspase-3) (Catalog # 707-C3)
  • Substrate: Ac-Asp-Glu-Val-Asp-AFC (MP Biomedicals, Catalog # AFC138), 10 mM stock in DMSO
  • F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
  • Fluorescent Plate Reader (Model: SpectraMax Gemini EM by Molecular Devices) or equivalent

  1. Dilute rhCaspase-3 to 0.4 ng/µL in Assay Buffer.
  2. Dilute Substrate to 100 µM in Assay Buffer.
  3. Load 50 µL of 0.4 ng/µL rhCaspase-3 into a plate, and start the reaction by adding 50 µL of 100 µM Substrate.  Include a Substrate Blank containing 50 µL Assay Buffer and 50 µL of 100 µM Substrate.
  4. Read at excitation and emission wavelengths of 400 nm and 505 nm (top read), respectively, in kinetic mode for 5 minutes.
  5. Calculate specific activity:

     Specific Activity (pmol/min/µg) =

 Adjusted Vmax* (RFU/min) x Conversion Factor** (pmol/RFU)
amount of enzyme (µg)

     *Adjusted for Substrate Blank

     **Derived using calibration standard 7-amino, 4-(trifluoromethyl)coumarin (Calbiochem, Catalog #164580).

Per Well:
  • rhCaspase-3: 0.02 µg
  • Substrate:  50 µM

FAQs

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