Active Recombinant Human IL2, His-tagged

• Cat.No.: IL2-25H
• Product Overview: Recombinant Human IL2 was produced in the endosperm tissue of barley grain (Hordeum vulgare).

Specification

• Description: Interleukin 2 (IL-2) is a potent immunoregulatory growth factor produced by T-cells following stimulation by mitogens or allogens. IL-2 promotes growth and differentiation of various cells of the immune system, such as activated T-cells and B-cells, NK cells, lymphokine activated killer cells, monocytes and macrophages. It is essential for proper immune response, it may also be an important factor in the natural suppression of autoimmunity. IL-2 may be of use as an anti-tumor agent in cancer therapy. Human and mouse IL-2 share 56% aa sequence identity and exhibit cross-species activity.
• Source: Barley grain (Hordeum vulgare)
• Species: Human
• Tag: His
• Form: Sterile filtered through a 0.2 μm filter. Lyophilized from PBS, pH 7.2.
• Bio-activity: Recombinant human IL-2 is assayed by measuring its dose dependent effect on proliferation of CTLL-2 cells. The ED50 for this effect is typically< 1.25 ng/ml, corresponding to a specific activity>1 x10e6 U/mg. Optimal concentration should be determined for specific applications and cell lines.
• Molecular Mass: Recombinant human IL-2 contains 133 amino acids and a 16 a.a. histidine-based tag for a total length of 149 a.a. and has a predicted molecular mass of 17.5 kDa. The recombinant protein migrates with an apparent molecular mass of 22 kDa in SDS-PAGE.
• Endotoxin: Endotoxin level is less than 0.005ng per μg of product (0.05EU/μg).
• Purity: Greater than 95% by SDS-PAGE gel analysis.
• Storage: The lyophilized protein, though stable at room temperature for few weeks, is best stored at -20°C. Reconstituted protein should be used immediately or stored in working aliquots at -20°C. Avoid repeated freeze-thaw cycles.
• Reconstitution: Always centrifuge the vial before opening. It is recommended to reconstitute the lyophilized protein in sterile water to a concentration of no less than 100 μg/ml. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Gene Information

• Gene Name: IL2 interleukin 2 [ Homo sapiens ]
• Official Symbol: IL2
• Synonyms: IL2; interleukin 2; interleukin-2; IL 2; T cell growth factor; TCGF; aldesleukin; involved in regulation of T-cell clonal expansion; IL-2; lymphokine
• Gene ID: 3558
• mRNA Refseq: NM_000586
• Protein Refseq: NP_000577
• MIM: 147680
• UniProt ID: P60568
• Chromosome Location: 4q26-q27
• Pathway: Allograft rejection, organism-specific biosystem; Allograft rejection, conserved biosystem; Autoimmune thyroid disease, organism-specific biosystem; Autoimmune thyroid disease, conserved biosystem; Calcineurin-regulated NFAT-dependent transcription in lymphocytes, organism-specific biosystem; Calcium signaling in the CD4+ TCR pathway, organism-specific biosystem; Chagas disease (American trypanosomiasis), organism-specific biosystem
• Function: carbohydrate binding; cytokine activity; glycosphingolipid binding; growth factor activity; interleukin-2 receptor binding; interleukin-2 receptor binding; kappa-type opioid receptor binding; kinase activator activity