IL-15 Protein (AA 49-162)

Catalog No. ABIN2667460

Product Details

Target: IL-15 (IL15) (Interleukin 15 (IL15))

Protein Type: Recombinant

Biological Activity: Active

Protein Characteristics: AA 49-162

Origin: Human

Source: Escherichia coli (E. coli)

Application: Flow Cytometry (FACS)

Purity: >98 % , as determined by Coomassie stained SDS-PAGE and HPLC analysis.

Endotoxin Level:

Less than 0.1 ng per μg of protein.

Application Details

Application Notes: Optimal working dilution should be determined by the investigator.

Comment:

Biological activity: ED50 is ≤ 0.5 ng/ml, corresponding to a specific activity of ≥ 2.0 x 106 units/mg as determined by the dose-dependent stimulation of the proliferation of mouse CTLL-2 cells.

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: For maximum results, quick spin vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. It is recommended to further dilute in a buffer, such as 5 % Trehalose, and store working aliquots at -20 °C to -80 °C.

Buffer: Lyophilized, carrier-free.

Handling Advice: Avoid repeated freeze/thaw cycles.

Storage: -20 °C

Storage Comment: Unopened vial can be stored at -20°C or -70°C.

Target Details

Target: IL-15 (IL15) (Interleukin 15 (IL15))

Alternative Name: IL-15 (IL15 Products)

Synonyms: IL15 Protein, AI503618 Protein, IL-15 Protein, interleukin 15 Protein, IL15 Protein, Il15 Protein

Background: IL-15 was discovered in the supernatant from a simian kidney epithelial cell line CV-1/EBNA, as a soluble factor capable of supporting proliferation of the IL-2-dependent cell line, CTLL-2. IL-15 is a regulatory cytokine, and it is produced by dendritic cells, epithelial cells, human stromal cell line (IMTLH), fibroblasts, and monocytes. IL-15 plays an important role in immune response and shares many functions with IL-2, for example, stimulating the proliferation of activated T cells, NK cells and B cells, and inducing immunoglobulin synthesis by B cells stimulated by anti-IgM or CD40 ligand. In addition, IL-15 promotes the development of dendritic cells, activates human neutrophils and induces the production of proinflammatory cytokines from macrophages. IL-15 acts as a bridge between innate and adaptive immunity because of its diverse roles in the immune system. IL-15 binds to heterotrimeric receptors composed of IL-15Rα, IL-15Rβ, and IL-15Rγc. IL-15 shares with IL-2 the receptor chains β and γc. IL-15 is normally not secreted in soluble form but is held on the cell surface bound to a unique receptor, IL-15Rα, especially on dendritic cells. Cell-bound IL-15 then is presented in trans to T cells and NK cells and is recognized by the γc receptor on these cells, such recognition maintains cell survival and intermittent proliferation.

Molecular Weight: The 115 amino acid N-terminal methionylated recombinant protein has a predicted molecular mass of 12.9 kDa. The predicted N-terminal amino acid is Met.

Pathways: JAK-STAT Signaling, Glycosaminoglycan Metabolic Process