Active Recombinant Human IL21, Fc-tagged

• Cat.No.: IL21-337H
• Product Overview: The extracellular domain of human IL-21 (aa 32-162) is fused to the N-terminus of the Fc region of a mutant human IgG1.

Specification

• Description: Interleukin-21 (IL-21) is a key factor in the transition between innate and adaptive immune responses secreted by activated T cells. The IL-21 receptor (IL-21R) is expressed in lymphoid tissue, in particular by NK, B, T and dendritic cells, macrophages and endothelial cells. Recent evidence suggests that IL-21 plays a supportive role in the proliferation of T and B cells and influences the cytolytic activity of natural killer cells. IL-21 has been shown to up-regulate genes associated with innate immunity and to inhibit the differentiation of na?ve T helper cells. IL-21 specifically inhibits IFN-gamma production from developing TH1 cells and is preferentially expressed by TH2 cells. Furthermore IL-21 has been identified as a growth and survival factor for human myeloma cells. IL-21/IL-21R interactions have a unique role in sequentially activating both innate and adaptive immune responses against poorly immunogenic tumors, leading to tumor rejection that is perforin dependent but IFN-gamma independent.
• Source: CHO Cells
• Species: Human
• Tag: Fc
• Form: Lyophilized from 0.2μm-filtered solution in PBS.
• Bio-activity: Shows the biological function of the IL-21 moiety and exerts a prolonged circulating half-life caused by the modified Fc domain.
• Purity: ≥98% (SDS-PAGE)
• Stability: Stable for at least 1 year after receipt when stored at -20°C. Working aliquots are stable for up to 3 months when stored at -20°C.
• Storage: Short Term Storage: +4°C; Long Term Storage: -20°C. Avoid freeze/thaw cycles.

Gene Information

• Gene Name: IL21 interleukin 21 [ Homo sapiens ]
• Official Symbol: IL21
• Synonyms: IL21; interleukin 21; interleukin-21; IL 21; Za11; interleukin-21 isoform; IL-21
• Gene ID: 59067
• mRNA Refseq: NM_001207006
• Protein Refseq: NP_001193935
• MIM: 605384
• UniProt ID: Q9HBE4
• Chromosome Location: 4q26-q27
• Pathway: Cytokine-cytokine receptor interaction, organism-specific biosystem; Cytokine-cytokine receptor interaction, conserved biosystem; Jak-STAT signaling pathway, organism-specific biosystem; Jak-STAT signaling pathway, conserved biosystem
• Function: cytokine activity; cytokine receptor binding; interleukin-2 receptor binding