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- Regulatory Status
- RUO
- Other Names
- IL10D, interleukin 20, IL20, interleukin-20, IL-20, Cytokine Zcyto10, ZCYTO10, four alpha helix cytokine, MGC96907, Interleukin-20
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- Product Citations
- publications
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When recombinant human IL-20 is immobilized at 5 µg/mL, recombinant human IL-20Rβ binds in a dose-dependent manner. HRP Protein A (Cat. No. 689202) was used to detect the binding. The ED50 for this effect is 1.3 – 10 µg/mL. -
Stability Testing for Recombinant Human IL-20. Recombinant Human IL-20 was aliquoted in PBS, pH 7.2 at 0.2 mg/mL and one aliquot was kept at 4°C (Control), and another was frozen and thawed four times (4x Freeze/Thaw). The samples were tested in a binding assay with immobilized recombinant human IL-20 at 5 µg/mL and different concentration of human IL-20Rβ that binds in a dose-dependent manner. The ED50 for this effect is 1.3 – 10 µg/mL.
| Cat # | Size | Price | Quantity Check Availability | Save | ||
|---|---|---|---|---|---|---|
| 564704 | 25 µg | $365 | ||||
| 564706 | 100 µg | $1095 | ||||
Interleukin (IL)-20 is a part of a larger IL-10 family which is comprised of nine members: IL-10, IL-19, IL-20, IL-22, IL-24, IL-26, and the distantly related cytokines: IL-28A, IL-28B, and IL-29. IL-20 plays a key role between the epithelial tissues and the immune system. The expression of IL-20 is stimulated by LPS, TNF, IL-1β, IL-17, and IL-22. IL-20 is highly expressed on epithelial cells and produced by a large number of immune cells, including lymphocytes, neutrophils, and monocytes/macrophages. IL-20 signals through the β subunit of IL-20 receptor (IL-20Rβ), which can form a heterodimeric receptor with either IL-20Rα or IL-22Rα1. IL-20R is mostly expressed in the lungs, ovary, skin, and placenta. The main cellular targets of IL-20 are keratinocytes, endothelial cells, and adipocytes. IL-20 plays a key role in signal transduction and activation of transcription 3 (STAT3) in keratinocytes. In bladder cancer cell lines, IL-20 enhances migration, invasion, and wound healing. IL-20 is expressed in atherosclerosis plaques found in patients with atherosclerosis and promotes atherosclerosis in apolipoprotein E-deficient mice model.
Product DetailsProduct Details
- Source
- Recombinant Human IL-20, amino acid Lys25-Glu176 (Accession No. Q9NYY1) was expressed in CHO cells.
- Molecular Mass
- The 153 amino acid recombinant protein has a predicted molecular mass of approximately 17.7 kD. The DTT-reduced and non-reduced protein migrates at approximately 15 - 25 kD by SDS-PAGE.
- Purity
- > 95%, as determined by Coomassie stained SDS-PAGE.
- Formulation
- 0.22 µm filtered protein solution is in PBS
- Endotoxin Level
- Less than 0.1 EU per µg cytokine as determined by the LAL method.
- Concentration
- 25 µg size is 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 and expiration, please enter the lot number in our Certificate of Analysis online tool.
- Storage & Handling
- Unopened vial can be stored between 2°C and 8°C for up to 2 weeks, at -20°C for up to six months, or at -70°C or colder until the expiration date. For maximum results, quick spin vial prior to opening. The protein can be aliquoted and stored at -20°C or colder. Stock solutions can also be prepared at 50 - 100 µg/mL in appropriate sterile buffer, carrier protein such as 0.2 - 1% BSA or HSA can be added when preparing the stock solution. Aliquots can be stored between 2°C and 8°C for up to one week and stored at -20°C or colder for up to 3 months. Avoid repeated freeze/thaw cycles.
- Activity
- Immobilized recombinant human IL-20 binds human IL-20 Rβ in a dose-dependent manner. The ED50 for this effect is 1.3 – 10 µg/mL.
- Application
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Bioassay
- Application Notes
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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 validated 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 tech@biolegend.com.
Antigen Details
- Structure
- Monomer
- Distribution
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IL-20 is produced by monocytes, granulocytes, dendritic cells, keratinocytes and fibroblasts
- Function
- Prevention of apoptosis in epithelial cells, proliferation of epithelial cells, wound healing, regulation of differentiation of keratinocytes during inflammation, and expansion of multipotential hematopoietic progenitor cells
- Interaction
- Receptors for IL-20 are expressed in the skin, ovary, lungs, and placenta. The main cellular targets of IL-20 are keratinocytes, endothelial cells, and adipocytes.
- Ligand/Receptor
- IL-20 signals through the β subunit of IL-20 receptor (IL-20Rβ), which can form a heterodimeric receptor with either IL-20Rα or IL-22Rα1.
- Bioactivity
- Recombinant human IL-20 binds human IL-20Rβ
- Cell Type
- Dendritic cells, Epithelial cells, Fibroblasts, Granulocytes, Monocytes
- Biology Area
- Adaptive Immunity, Immuno-Oncology, Innate Immunity, Signal Transduction
- Molecular Family
- Cytokine/Chemokine Receptors, Cytokines/Chemokines, Innate Immune Signaling
- Antigen References
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- Rutz S, et al. 2014. Nature Reviews Immunology. 14:783-95.
- Blumberg H, et al. 2001. Cell. 104:9.
- Ouyang W, et al. 2011. Annual Review of Immunology. 29:71-109.
- Sa SM, et al. 2007. Journal of Immunology. 178:2229-40.
- Kragstrup TW, et al. 2016. Arthritis Research & Therapy. 18:61.
- Meira LB, et al. 2008. The Journal of Clinical Investigation. 118:2516-25.
- Sano S, et al. 2005. Nature Medicine. 11:43-9.
- Lee SJ, et al. 2012. Plos One. 7: e40267.
- Chen WY, et al. 2006. Arterioscler Thromb Vasc Biol. 26:2095.
- Gene ID
- 50604 View all products for this Gene ID
- UniProt
- View information about IL-20 on UniProt.org
Related Pages & Pathways
Pathways
Related FAQs
- Why choose BioLegend recombinant proteins?
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• 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?
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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?
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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?
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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?
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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?
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Use formula Specific activity (Units/mg) = 10^6/ ED50 (ng/mL)
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