- Regulatory Status
- Other Names
- Matrilysin, Matrix Metalloproteinase 7, MMP7, MMP
- Ave. Rating
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- Product Citations
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Matrix metalloproteinases (MMPs) are a family of zinc-dependent endopeptidases that degrade components of the extracellular matrix (ECM) and play essential roles in various physiological and pathological processes such as morphogenesis, differentiation, angiogenesis, tissue remodeling, and tumor invasion. A typical MMP consists of a pro-peptide of about 80 amino acids, a catalytic metalloproteinase domain of about 170 amino acids, a linker peptide of variable lengths and a hemopexin domain of about 200 amino acids. The zinc binding motif HEXXHXXGXXH in the catalytic domain, and the ‘‘cysteine switch’’ motif PRCGXPD in the pro-peptide are common structural signatures. MMP-7, Matrilysin, is one of the smallest members of the MMP family consisting of a pro-peptide domain and a catalytic domain. It can degrade casein, laminin, fibronectin, collagen type III/IV/V/IX/X/XI, gelatin type I/II/IV/ V, elastin, and proteoglycans. MMP-7 is secreted specifically by epithelial cells and its over-expression has been observed in many tumor types such as colorectal cancer, epidermolysisbullosa associated skin cancer, bladder cancer, gastric cancers, pancreatic cancer and esophageal cancer. This enzyme serves essential functions in both innate defense and wound healing, and appears to be one of the most important MMPs in human colon cancers. It has been reported that MMP-7 contributes to tumor malignancy probably by cleaving cell surface proteins such as Fas ligand (reducing its effectiveness in triggering Fas-mediated apoptosis) and E-cadherin (disruption to the E-cadherin/beta-catenin complex results in a switch to a more invasive phenotype in cancer cells). In addition, degradation of IgG by MMP-7 may protect tumor cells from the immune system, since cleavage of IgG will remove much of the immunoglobulins' functionality.Product Details
- Human MMP-7, amino acids Leu18-Lys267 (Accession# NM_002423) with a C-terminal TG-8H-GGQ tag was expressed in CHO cells.
- Molecular Mass
- The 263 amino acid recombinant protein has a predicted molecular mass of approximately 29.4 kD. The DTT-reduced and non-reduced proteins migrates at approximately 29 kD by SDS-PAGE.
- >90% as determined by Coomassie stained SDS-PAGE.
- 0.22 µm filtered protein solution is in pH 5.5 MES buffer containing 20 mM MES, 10 mM CaCl2, 150 mM NaCl, and 20% glycerol.
- Endotoxin Level
- Less than 1 EU per µg of protein as determined by the LAL method.
- 10 and 25 µg sizes are bottled at 200 µg/mL. 100 µg size and larger sizes are lot-specific and bottled at the concentration indicated on the vial. To obtain lot-specific concentration, please enter the lot number in our Concentration and Expiration Lookup or Certificate of Analysis online tools.
- Storage & Handling
- Unopened vial can be stored at -20°C or -70°C for six months. For maximum results, quick spin vial prior to opening. Avoid repeated freeze/thaw cycles.
- Human MMP-7 cleaves a fluorogenic peptide substrate Mca-PLGL(Dpa)AR with a specific activity value > 500 pmol/µg/min.
- Recommended Usage
- Application Notes
Human MMP-7 Activity Assay
Human MMP-7 (hMMP-7) activity is measured by its ability to cleave a fluorogenic peptide substrate Mca-PLGL(Dpa)AR after its activation in the presence of p-Aminophenylmercuric acid. The increase of the product is monitored by increase in intensity of fluorescence at 405 nm with excitation at 320 nm.
- Assay Buffer: TCNB (50 mM Tris, 10 mM CaCl2, 150 mM NaCl, 0.05% Brij-35, pH 7.5)
- Recombinant Human MMP-7
- Substrate: MCa-PLGL(Dpa)AR
- 4-Aminophenylmercuric acetate (APMA)
Activity Assay Procedures
- Dilute hMMP-7 in the assay buffer at 50 µg/mL.
- Activate hMMP-7 by adding APMA to a final concentration of 1 mM.
- Incubate the activating mixture for 30 minutes at 37°C.
- Dilute the activated hMMP-7 to 0.4 ug/mL (0.4 ng/µL) in Assay Buffer.
- Dilute the substrate at 20 µM in Assay Buffer.
- Load into a well plate 50 μL of the 0.4 ng/μL hMM-7 and start the reaction by adding 50 μL of 20 μM Substrate. Include a substrate blank containing 50 μL Assay Buffer and 50 μL of 20 μM Substrate without any hMMP7.
- Read the product formation by measuring 320/405 nm (Excitation/Emission) in kinetic mode for 5 minutes.
- The final hMMP-7 concentration is 0.2 µg/mL (200 ng/ml, 20 ng) and the substrate is 10 µM.
This protein is in the latent form and needs to be activated for bioassay.
BioLegend carrier-free recombinant proteins provided in liquid format are shipped on blue-ice. Our comparison testing data indicates that when handled and stored as recommended, the liquid format has equal or better stability and shelf-life compared to commercially available lyophilized proteins after reconstitution. Our liquid proteins are verified in-house to maintain activity after shipping on blue ice and are backed by our 100% satisfaction guarantee. If you have any concerns, contact us at email@example.com.
High protein expression in liver, gall bladder, endometrium, and uterus/BM314 colon cancer cell, K562 Leukimia cell, CAPAN-2.
- ECM remodeling and wound healing; TIMPs are known inhibitor of MMP-7.
- Extracellular Matrix (ECM).
- TIMP-1, TIMP-2, TIMP-4.
- ECM remodeling by degrading ECM components.
- Biology Area
- Angiogenesis, Cell Adhesion, Cell Biology, Neuroinflammation, Neuroscience, Stem Cells
- Molecular Family
- Enzymes and Regulators
- Antigen References
1. Basu S, et al. 2015. PLoS One. 10:e0123979.
2. Tallant C, et al. 2010. Biochim. Biophys. Acta. 1803:20.
3. Nagase H, et al. 2006. Cardiovasc. Res. 69:562.
4. Rundhaug JE. 2005. J. Cell. Mol. Med. 9:267.
5. Mott JD, Werb Z. 2004. Curr. Opin. Cell. Biol. 16:558.
6. Kioi M, et al. 2003. Oncogene. 22(54):8662-70.
- Gene ID
- 4316 View all products for this Gene ID
- View information about MMP-7 on UniProt.org
Related Pages & Pathways
- Why choose BioLegend recombinant proteins?
• Each lot of product is quality-tested for bioactivity as indicated on the data sheet.
• Greater than 95% Purity or higher, tested on every lot of product.
• 100% Satisfaction Guarantee for quality performance, stability, and consistency.
• Ready-to-use liquid format saves time and reduces challenges associated with reconstitution.
• Bulk and customization available. Contact us.
• Learn more about our Recombinant Proteins.
- How does the activity of your recombinant proteins compare to competitors?
We quality control each and every lot of recombinant protein. Not only do we check its bioactivity, but we also compare it against other commercially available recombinant proteins. We make sure each recombinant protein’s activity is at least as good as or better than the competition’s. In order to provide you with the best possible product, we ensure that our testing process is rigorous and thorough. If you’re curious and eager to make the switch to BioLegend recombinants, contact your sales representative today!
- What is the specific activity or ED50 of my recombinant protein?
The specific activity range of the protein is indicated on the product datasheets. Because the exact activity values on a per unit basis can largely fluctuate depending on a number of factors, including the nature of the assay, cell density, age of cells/passage number, culture media used, and end user technique, the specific activity is best defined as a range and we guarantee the specific activity of all our lots will be within the range indicated on the datasheet. Please note this only applies to recombinants labeled for use in bioassays. ELISA standard recombinant proteins are not recommended for bioassay usage as they are not tested for these applications.
- Have your recombinants been tested for stability?
Our testing shows that the recombinant proteins are able to withstand room temperature for a week without losing activity. In addition the recombinant proteins were also found to withstand four cycles of freeze and thaw without losing activity.
- Does specific activity of a recombinant protein vary between lots?
Specific activity will vary for each lot and for the type of experiment that is done to validate it, but all passed lots will have activity within the established ED50 range for the product and we guarantee that our products will have lot-to-lot consistency. Please conduct an experiment-specific validation to find the optimal ED50 for your system.
- How do you convert activity as an ED50 in ng/ml to a specific activity in Units/mg?
- Use formula Specific activity (Units/mg) = 10e6/ ED50 (ng/mL)