SRP3088

IL-21 human

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

• NACRES: NA.32
• UNSPSC Code: 12352202

Properties

• biological source: human
• recombinant: expressed in E. coli
• assay: ≥98% (HPLC), ≥98% (SDS-PAGE)
• form: lyophilized
• mol wt: 15.0 kDa
• packaging: pkg of 10 μg
• technique(s): cell culture | mammalian: suitable
• impurities: <0.1 EU/μg endotoxin, tested
• color: white to off-white
• UniProt accession no.: Q9HBE4
• shipped in: wet ice
• storage temp.: −20°C
• Gene Information: human ... IL21(59067)

Description

General description

IL-21 is a pleiotropic cytokine produced by CD4+ T cells in response to antigenic stimulation. Its action generally enhances antigen-specific responses of immune cells. The biological effects of IL-21 include induction of differentiation of T-cells-stimulated B-cells into plasma cells and memory B-cells, stimulation (in conjunction) with IL-4 of IgG production, and induction of apoptotic effects in naïve B-cells and stimulated B-cells in the absence of T-cell signaling. Additionally, IL-21 promotes the anti-tumor activity of CD8+ T-cells and NK cells. IL-21 exerts its effect through binding to a specific type I cytokine receptor, IL-21R, which also contains the gamma chain (gc) found in other cytokine receptors including IL-2, IL-4, IL-7, IL-9 and IL-15. The IL-21/IL-21R interaction triggers a cascade of events which includes activation of the tyrosine kinases JAK1 and JAK3, followed by activation of the transcription factors STAT1 and STAT3. Recombinant human IL-21 is a 15.0 kDa protein consisting of 132 amino acid residues.

Biochem/physiol Actions

IL-21 is a pleiotropic cytokine produced by CD4+ T cells in response to antigenic stimulation. Recombinant human IL-21 is a 15.0 kDa protein consisting of 132 amino acid residues.

Physical form

Lyophilized from 10 mM Sodium Phosphate, pH 7.6.

Preparation Note

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a stabilizer (example 5% Trehalose) and store in working aliquots at -20°C to -80°C.

Other Notes

MQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable