| Catalog# |
C013 |
| Source |
E.coli |
| Description |
Recombinant Human Interleukin-2/IL-2 is produced by our E. coli expression system. The target protein is expressed with sequence (Pro22-Thr153) of Human IL-2. |
| Names |
Interleukin-2, IL-2, T-Cell Growth Factor, TCGF, Aldesleukin, IL2 |
| Accession # |
P60568 |
| Formulation |
Lyophilized from a 0.2 μm filtered solution of 20mM HAc-NaAc, 150mM NaCl, pH 4.0 |
| Shipping |
The product is shipped at ambient temperature. |
| Reconstitution |
Always centrifuge tubes before opening. Do not mix by vortex or pipetting.
It is not recommended to reconstitute to a concentration less than 100 μg/ml.
Dissolve the lyophilized protein in 1X PBS.
Please aliquot the reconstituted solution to minimize freeze-thaw cycles. |
| Storage |
Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks.
Reconstituted protein solution can be stored at 4-7°C for 2-7 days.
Aliquots of reconstituted samples are stable at < -20°C for 3 months. |
| Biological Activity |
ED50 is less than 0.1 ng/ml as determined by the dose-dependent stimulation of murine CTLL-2 cells.
Specific Activity of 1.0 x 107 IU/ mg. |
| Purity |
Greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE. |
| Endotoxin |
Less than 0.1 ng/µg (1 IEU/µg). |
| Amino Acid Sequence |
MPTSSSTKKTQLQLEHLLLDLQMILNGINNYKNPKLTRMLTFKFYMPKKATELKHLQCLEEELKP LEEVLNLAQSKNFHLRPRDLISNINVIVLELKGSETTFMCEYADETATIVEFLNRWITFCQSIIS TLT
|
| Background |
Recombinant Human Interleukin-2 is a highly purified protein with a molecular weight of approximately 15,300 Daltons. The chemical name is des-alanyl-1, serine-125 Human Interleukin-2. It is produced by recombinant DNA technology using a genetically engineered E. coli strain containing an analog of the human interleukin-2 gene. Genetic engineering techniques were used to modify the Human IL-2 gene, and the resulting expression clone encodes a modified Human IL-2. This recombinant form differs from native Interleukin-2 in following ways: 1) it is not glycosylated; 2) the molecule has no N-terminal alanine; 3) the molecule has serine substituted for cysteine at amino acid position 125; 4) the aggregation state of molecule is likely to be different from that of native IL-2. |
