Merck IL-21 human

IL-21 human

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

생물학적 소스

human

재조합

expressed in E. coli

assay

≥98% (HPLC)
≥98% (SDS-PAGE)

form

lyophilized

분자량

15.0 kDa

포장

pkg of 10 μg

technique(s)

cell culture | mammalian: suitable

불순물

<0.1 EU/μg endotoxin, tested

색상

white to off-white

UniProt 수납 번호

Q9HBE4

배송 상태

wet ice

저장 온도

−20°C

Gene Information

human ... IL21(59067)

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.