Loading...

Recombinant Human IL-2 (293E expressed, carrier-free)

Pricing & Availability
Regulatory Status
RUO
Other Names
T-cell growth factor (TCGF), Eosinophil differentiation factor (EDF), Killer cell helper factor (KHF), Macrophage-activating factor for cytotoxicity I (MAF-C I), Thymocyte differentiation factor (TDF)
Ave. Rating
Submit a Review
Product Citations
publications
Recom_Human_IL-2_293E_1_CF
Recombinant human IL-2 induces the proliferation of HT-2 mouse cells in a dose-dependent manner. The ED50 for this effect is 0.3 – 1.5 ng/mL.
  • Recom_Human_IL-2_293E_1_CF
    Recombinant human IL-2 induces the proliferation of HT-2 mouse cells in a dose-dependent manner. The ED50 for this effect is 0.3 – 1.5 ng/mL.
  • Recom_Human_IL-2_293E_2_CF
    Stability Testing for Recombinant Human IL-2. Recombinant human IL-2 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 by their property to induce the proliferation of HT-2 mouse cells in a dose-dependent manner. The ED50 for this effect is 0.3 – 1.5 ng/mL.
Cat # Size Price Save
566904 25 µg ¥35,820
566906 100 µg ¥78,610
Description

IL-2 was discovered through its function as a T cell growth factor (TCGF). It plays a pivotal role in immune responses against pathogenic infection. Recognition and binding of foreign antigens by the TCRs stimulate both the secretion of IL-2 and the expression of IL-2Rs on the T cell surface. Subsequently, the IL-2/IL-2R interaction activates the intracellular Ras/Raf/MAPK, JAK/STAT, and PI3K/AKT signaling pathways, and ultimately stimulates the growth, differentiation, and survival of the Ag-selected cytotoxic T cells. Human IL-2 acts on murine and human T cells, and its receptors are shared by other cytokines. IL-2Rα is an IL-2–specific receptor, IL-2Rβ is shared with IL-15 and the γ chain that is a common receptor shared by many cytokines including IL-2, IL-4, IL-7, IL-9, IL-15, and IL-21.

Product Details
Technical data sheet

Product Details

Source
Human IL-2, amino acid sequence (Ala21-Thr153) (Accession: # P60568), was expressed in 293E cells. The amino-terminus contains 8His tag.
Molecular Mass
The 151 amino acid recombinant protein has a predicted molecular mass of approximately 17.4 kD. The DTT-reduced and non-reduced proteins migrate at approximately 15 kD - 18 kD by SDS-PAGE. The predicted N-terminal amino acid is His.
Purity
> 95%, as determined by Coomassie stained SDS-PAGE
Formulation
0.22 µm filtered protein solution is in PBS, pH 7.2
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 the 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
Recombinant human IL-2 induces the proliferation of HT-2 cells in a dose dependent manner. The ED50 for this effect is 0.3 – 1.5 ng/mL.
Application

Bioassay
Application Notes

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

T cells (CD4+ and CD8+), gamma δ T cells, B cells, dendritic cells, and eosinophils. Mainly activated T cells

Function
Differentiation of Th1 and Th2 cells, inhibition of Th17 and Tfh cell differentiation, regulation of Treg differentiation, T cell proliferation, B cell proliferation, promotes CD8 and NK cell cytolytic activity
Interaction
CD4 T cells, T reg cells, CD8 effector cells, NK cells, B cells
Ligand/Receptor
Trimeric receptor: IL-2Rα (CD25), IL-2Rβ (CD122), and γc (CD132) and dimeric receptor: IL-2Rβ (CD122) and γc (CD132)
Bioactivity
Recombinant human IL-2 induces the proliferation of mouse HT-2 cells in a dose dependent manner.
Cell Type
Tregs
Biology Area
Cell Biology, Immunology, Neuroinflammation, Neuroscience
Molecular Family
Cytokines/Chemokines
Antigen References
  1. Siegel JP, et al. 1987. Science. 238:75-8.
  2. Cote-Sierra J, et al. 2004. Proc Natl Acad Sci USA. 101:3880-5.
  3. Laurence A, et al. 2007. Immunity. 26:371-81
  4. Sakaguchi S, et al. 2008. Cell. 133:775-87.
  5. Liao W, et al. 2011. Nat Immunol. 12:551-9.
  6. Ballesteros-Tato A, et al. 2012. Immunity. 36:847-56.
  7. Liao W, et al. 2013. Immunity. 38:13-25.
  8. Read KA, et al. 2016. Exp Hematol. 44:799-808.
Gene ID
3558 View all products for this Gene ID
UniProt
View information about IL-2 on UniProt.org

Related FAQs

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) = 10^6/ ED50 (ng/mL)

Go To Top Version: 1    Revision Date: 12/26/2023

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

BioLegend, the BioLegend logo, and all other trademarks are property of BioLegend, Inc. or their respective owners, and all rights are reserved.

 

8999 BioLegend Way, San Diego, CA 92121 www.biolegend.com
Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

ProductsHere
Login / Register
Remember me
Forgot your password? Reset password?
Create an Account