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Recombinant Human Interleukin-15/IL-15 Protein (Active)

Uniprot : P40933
  • Cat.No.:PKSH033630

  • Expression host: E.coli

To Purchase PKSH033630

Size:
  • 20µg
  • 100µg
Price: $249$220
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Description

Synonyms IL-15, Interleukin 15, IL15
Species Human
Expression_host E.coli
Sequence Asn49-Ser162
Accession P40933
Application Cell Culture
Mol_Mass 12.5 kDa
AP_Mol_Mass 12 kDa
Tag None
Bio_Activity Measured in a cell proliferation assay using CTLL‑2 mouse cytotoxic T cells. The ED50 for this effect is 40-200pg/ml.

Properties

Purity > 95 % as determined by reducing SDS-PAGE.
Endotoxin level < 1.0 EU per μg of the protein as determined by the LAL method.
Storage Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
Shipping This product is provided as lyophilized powder which is shipped with ice packs.
Formulation Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, pH 7.0.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the printed man
Reconstitution Please refer to the printed manual for detailed information.

Background

Human Interleukin 15 (IL-15) is a cytokine that regulates T cell and natural killer cell activation and proliferation. IL-15 binds to the alpha subunit of the IL15 receptor (IL-15RA) with high affinity. IL-15 also binds to the beta and gamma chains of the IL-2 receptor, but not the alpha subunit of the IL2 receptor. IL-15 is structurally and functionally related to IL-2. Both cytokines share some subunits of receptors, allowing them to compete for and negatively regulate each other's activity. The number of CD8+ memory T cells is controlled by a balance between IL-15 and IL-2. Despite their many overlapping functional properties, IL-2 and IL-15 are, in fact, quite distinct players in the immune system. IL-15 is constitutively expressed by a wide variety of cell types and tissues, including monocytes, macrophages and DCs. Mature Human IL-15 shares 70% amino acid sequence identity with Mouse and Rat IL-15.

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