Abbreviation
Recombinant Human IL2 protein (Active)
Purity
>97% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine CTLL-2 cells is less than 0.1 ng/ml, corresponding to a specific activity of >1.0x107 IU/mg.
Alternative Names
Aldesleukin; IL 2; IL-2; IL2; IL2_HUMAN; Interleukin 2; Interleukin-2; interleukin2; Involved in regulation of T cell clonal expansion; Lymphokine; OTTHUMP00000164090; POIL2; T Cell Growth Factor; T-cell growth factor; TCGF
Species
Homo sapiens (Human)
Expression Region
21-153aa
Target Protein Sequence
APTSSSTKKTQLQLEHLLLDLQMILNGINNYKNPKLTRMLTFKFYMPKKATELKHLQCLEEELKPLEEVLNLAQSKNFHLRPRDLISNINVIVLELKGSETTFMCEYADETATIVEFLNRWITFCQSIISTLT
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Protein Length
Full Length of Mature Protein
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Buffer
0.2 μm filtered 20 mM PB, pH 3.5 ,lyophilized
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
IL-2 is a central driver of T cell proliferation and homeostasis, making signaling potency and endotoxin control essential for any recombinant form used in immune cell assays. This tag-free human IL-2, encompassing the full mature sequence (Ala21–Thr153), demonstrates an ED50 below 0.1 ng/mL in CTLL-2 proliferation assays—corresponding to a specific activity exceeding 1.0 × 10⁷ IU/mg—which provides a suitable basis for T cell expansion protocols, PBMC activation studies, and JAK/STAT signaling pathway dissection. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that can confound cytokine-dependent readouts in primary immune cell cultures and in vivo tumor biology or inflammation models. Purity above 97% by SDS-PAGE, combined with this stringent endotoxin profile, also supports use as a quantitative reference standard in ELISA-based cytokine detection and as a reliable positive control for antibody validation by Western blot.