Recombinant Mouse u-Plasminogen Activator (uPA) Protein, CF
Recombinant Mouse u-Plasminogen Activator (uPA) Protein, CF Summary
Product Specifications
Gly21-Phe433, with a C-terminal 6-His tag
Analysis
Product Datasheets
Carrier Free
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.
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.
11143-SE
| Formulation | Supplied as a 0.2 μm filtered solution in HEPES, NaCl and CaCl2. |
| 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.
|
Assay Procedure
- Assay Buffer: 50 mM Tris, 0.01% (v/v) Tween® 20, pH 8.5
- Recombinant Mouse u-Plasminogen Activator (uPA)/Urokinase (rmuPA) (Catalog # 11143-SE)
- Substrate: Z-Gly-Gly-Arg-AMC (Bachem, Catalog # I-1140), 10 mM stock in DMSO
- F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
- Fluorescent Plate Reader (Model: SpectraMax M5 by Molecular Devices) or equivalent
- Dilute rmuPA to 1 ng/µL in Assay Buffer.
- Dilute Substrate to 2 mM in Assay Buffer.
- Load 50 μL of 1 ng/µL rmuPA into a black well plate, and start the reaction by adding 50 µL of 2 mM Substrate. Include a Substrate Blank containing 50 µL of Assay buffer and 50 µL of 2 mM Substrate.
- Read at excitation and emission wavelengths of 380 nm and 460 nm (top read), respectively, in kinetic mode for 5 minutes.
- Calculate specific activity:
Specific Activity (pmol/min/µg) = | Adjusted Vmax* (RFU/min) x Conversion Factor** (pmol/RFU) |
| amount of enzyme (µg) |
- rmuPA: 0.05 µg
- Substrate: 1 mM
Scientific Data
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Recombinant Mouse u-Plasminogen Activator (uPA)/Urokinase His-tag (Catalog # 11143-SE) is measured by its ability to cleave a peptide substrate, N-carbobenzyloxy-Gly-Gly-Arg-7-amido-4-methylcoumarin (Z-GGR-AMC).
Reconstitution Calculator
Background: u-Plasminogen Activator (uPA)/Urokinase
Urokinase Plasminogen Activator (uPA), also known as u-plasminogen activator or urokinase, is a highly-specific serine protease from the peptidase S1 family that cleaves plasminogen to form plasmin making it a key player in the plasminogen activator (PA) system (1, 2). In cancer, the PA system plays a commanding role in tumor growth, angiogenesis, tumor cell invasion, migration, and metastasis. Expression of uPA is minimal in normal cells but is increased several fold in tumor cells by extracellular stimuli elevated in cancer (3) and corresponds to poor outcomes in several types of cancer (2, 4-7). Therefore, uPA has been identified as an excellent target for therapeutic development through inhibition of protease activity or though inhibition of uPA-dependent signaling while in complex with uPA receptor (uPAR) (2, 7). The pro-enzyme of uPA is synthesized with an N-terminal signal peptide and processed into an active disulfide-linked two-chain molecule (2, 7-10). For mouse uPA, the B chain starting at Ile180 corresponds to the catalytic domain. Two forms of the A chain exist, one starting at Gly21 (the long form) and the other at Lys157 (the short form). While the B chain is common for both forms, the long and short A chains are unique to expected 47 kDa and 32 kDa two-chain forms, respectively. The long A chain contains an EGF-like domain and the kringle domain. The long A domain is reported as responsible for the binding of the uPA receptor (uPAR) (2, 7).
- Ellis, V. (2004) in Handbook of Proteolytic Enzymes. Barrett, A.J. et al. eds., Academic Press, San Diego, pp.1677.
- Mahmood, N. et al. (2018) Front Oncol. 8:24.
- Nagamine, Y. et al. (2005) Thromb. Haemost. 93:661.
- Duffy, M. and C. Duggan. (2004) Clin. Biochem. 37:541.
- Pappot, H. et al. (2006) Lung Cancer 51:193.
- Taubert, H. et al. (2010) Br. J. Cancer 102:731.
- Masucci, M.T. et al. (2022) Cancers. 14:498.
- Riccio, A. et al. (1985) Nucleic Acids Res. 13:2759.
- Nagai, M. et al. (1985) Gene 36:183.
- Jacobs, P. et al. (1985) DNA 4:139.
Citation for Recombinant Mouse u-Plasminogen Activator (uPA) Protein, CF
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
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Decreased fertility in female mice lacking urokinase plasminogen activator
Authors: Laurenzi, G;Fedeli, V;Canipari, R;
Reproductive biology
Species: Mouse
Sample Types: Whole Cells
Applications: Bioassay
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