IL15 active protein

Recombinant Human IL15

Cat. Num. AAA4159673

• Gene Names: IL15; IL-15
• Purity: >95% as determined by SDS-PAGE
• Synonyms: IL15; Recombinant Human IL15; IL-15; IL-T; Recombinant Human Interleukin-15 (IL15); IL15 active protein

• Host: E Coli
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from a 0.2 um filtered PBS solution pH 7.5.
• Sequence Length: 162

• Bioactivity: The ED(50) as determined by the dose-dependent proliferation of T lympocytes was <0.1ng/ml.
• Endotoxin Level: <1.0 EU/ug of recombinant protein as determined by the LAL method.
• Reconstitution: A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
• Preparation and Storage: The lyophilized protein is stable for at least one year from date of receipt at-70 degree C. Upon reconstitution, this cytokine can be stored in working aliquots at 2-8 degree C for one month, or at-20 degree C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.

Testing Data

Testing Data

Related Product Information for IL15 active protein

IL-15 has been shown to be produced by human fetal astrocytes and microglial cells in response to IL-1-beta, IFN-gamma, or TNF-alpha and may thus play a role in T cell mediated immune responses in the human central nervous system. IL-15 stimulates proliferation of the established T cell line CTLL-2, CD8(+) memory T cells require IL-15 for proliferation. IL-15 is also able to induce generation of cytolytic cells and LAK cells activity in vitro. IL-15 appears to function as a specific maturation factor for natural killer cells and can mimic the bone marrow microenvironment in vitro, which is required for natural killer cells to acquire lytic functions. IL-15 induces proliferation of mast cells in the absence of functional IL-2 receptor components and utilizes a receptor of 60-65 kDa that is distinct from known components of T cell IL-15 receptors. The IL-15 receptor on mast cells recruits JAK2 and STAT5, instead of JAK1, JAK3 and STAT3 and STAT5 that are activated in T cells. The alpha subunit of the IL-15 receptor (IL-15RA) is structurally related to the alpha subunit of the IL-2 receptor and confers high affinity binding of IL-15 to its receptor. IL-15 binds to the beta and gamma chains of the IL-2 receptor, which are known to be required for ligand internalization and signal transduction.

NCBI and Uniprot Product Information

• NCBI GI #: 10835153
• NCBI GeneID: 3600
• NCBI Accession #: NP_000576.1
• NCBI GenBank Nucleotide #: NP_000576.1
• UniProt Accession #: P40933
• Molecular Weight: 13.0 kDa
• NCBI Official Full Name: interleukin-15 isoform 1 preproprotein
• NCBI Official Synonym Full Names: interleukin 15
• NCBI Official Symbol: IL15
• NCBI Official Synonym Symbols: IL-15
• NCBI Protein Information: interleukin-15
• UniProt Protein Name: Interleukin-15
• Protein Family: Interleukin
• UniProt Gene Name: IL15
• UniProt Synonym Gene Names: IL-15
• UniProt Entry Name: IL15_HUMAN

NCBI Description

The protein encoded by this gene is a cytokine that regulates T and natural killer cell activation and proliferation. This cytokine and interleukine 2 share many biological activities. They are found to bind common hematopoietin receptor subunits, and may compete for the same receptor, and thus negatively regulate each other's activity. The number of CD8+ memory cells is shown to be controlled by a balance between this cytokine and IL2. This cytokine induces the activation of JAK kinases, as well as the phosphorylation and activation of transcription activators STAT3, STAT5, and STAT6. Studies of the mouse counterpart suggested that this cytokine may increase the expression of apoptosis inhibitor BCL2L1/BCL-x(L), possibly through the transcription activation activity of STAT6, and thus prevent apoptosis. Alternatively spliced transcript variants of this gene have been reported. [provided by RefSeq, Feb 2011]