Recombinant Human IL-21 Protein [E. coli] | 100-112S/100-112

Recombinant Human IL-21 Protein [E. coli] | 100-112S/100-112 | Gentaur UK, US & Europe Distribution

Species: Human

Host / biotech: E. coli

Comment: N/A

Label: N/A

Clone / Antibody feature: N/A

Subcategory: Cytokines & Growth Factors

Category: Recombinant Protein

Synonyms: Interleukin-21, Za11

Isotype: N/A

Application: N/A

Detection Range: Determined by its ability to stimulate the proliferation of human ANBL-6 cells. The expected ED50 is ≤ 0.5 ng/ml, corresponding to a specific activity of ≥ 2 x106 units/mg.

Species Reactivity/Cross reactivity: Mouse, Human

Antigen: N/A

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: inducing the differentiation of T-cell-stimulated B-cells into plasma cells and memory B-cells; the stimulation of IgG production in conjunction with IL-4; and the 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 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 15.4 kDa protein consisting of 132 amino acid residues.

Purity Confirmation: > 98% by SDS-PAGE & HPLC analyses

Endotoxin: < 0.1 ng/µg of protein (<1EU/µg)

Formulation: lyophilized

Storage Handling Stability: N/A

Reconstituation: N/A

Molecular Weight: 15.4 kDa

Lenght (aa): 132

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

NCBI Gene ID: 59067