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Key features and details:
- Expression System:Escherichia coli
- Purity/method:>98% as determined by SDS-PAGE. Ni-NTA chromatography
- Fusion tag:His-tag at the C-terminus
- Application: WB, ELISA, SDS-PAGE, Cell culture, Elisa
Product Description:
Protein Description:
Interleukin-2 (IL-2) is an interleukin, a type of cytokine signaling molecule in the immune system. It is a 15,5 - 16 kDa protein that regulates the activities of white blood cells (leukocytes, often lymphocytes) that are responsible for immunity. IL-2 is part of the body's natural response to microbial infection, and in discriminating between foreign ("non-self") and "self". IL-2 mediates its effects by binding to IL-2 receptors, which are expressed by lymphocytes.
Protein Accession: P60568.1
Gene ID: 3558
Species: Human
Expression Sequence:
MAPTSSSTKKTQLQLEHLLLDLQMILNGINNYKNPKLTRMLTFKFYMPKKATELKHLQCLEEELKPLEEVLNLAQSKNFHLRPRDLISNINVIVLELKGSETTFMCEYADETATIVEFLNRWITFCQSIISTLT with polyhistidine tag at the C-terminus.
Activity:
Measure by its ability to induce proliferation in CTLL-2 cells. The ED50 for this effect is <0.2 ng/mL. The specific activity of recombinant human IL-2 is approximately >2.5 x 107 IU/mg. Measure by its ability to induce proliferation in NK cells. The ED50 for this effect is <46 ng/mL.
C3
Endotoxin level: <0.01 EU per 1 ug of the protein by the LAL method.
Calculated Molecular Weight: 16.4 kDa
Formulation: The protein was lyophilized from a solution containing 1X PBS, pH 8.0.
Reconstitution:
It is recommended to reconstitute the lyophilized protein in sterile H2O to a concentration not less than 100 ug/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.
Shipping: Blue Ice
Stability and Storage:
Lyophilized protein should be stored at -20 degrees Celsius for 1 year. Upon reconstitution, store at 2 degrees Celsius to 8 degrees Celsius for up to 1 week. Further dilute in a buffer containing a carrier protein or stabilizer (e.g. 0.1% BSA, 10%FBS, 5%HSA or 5% trehalose solution), protein aliquots should be stored at -20 degrees Celsius or -80 degrees Celsius for 3-6 months.
Category: Cytokines
SDS-PAGE Image Name: human IL-2
Datasheets and documents:
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