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Interleukin-21 (IL-21), Human Europäischer Partner

ArtNr Z02715-1
Hersteller GenScript
Menge 1mg
Kategorie
Typ Proteins
Format Sterile Filtered White lyophilized (freeze-dried) powder.
Specific against Human
Purity >97% by SDS-PAGE and HPLC analyses.
Sequence MQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS
ECLASS 10.1 32160409
ECLASS 11.0 32160409
UNSPSC 12352202
Alias protein/Z02715-Interleukin-21_IL-21_Human, 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 conjuction) 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 (gammac) 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.</td></tr><tr><th>M.W.</th><td colspan="7"> Approximately 15.4 kDa, a single non-glycosylated polypeptide chain containing 133 amino acids.</td></tr><tr><th>Purity</th><td colspan="7"> >97% by SDS-PAGE and HPLC analyses.</td></tr><tr><th>Endotoxin Level</th><td colspan="7"> Less than 0.002 EU/ug of rHuIL-21 as determined by LAL method.</td></tr><tr><th>Specific Activity</th><td colspan="7"> Fully biologically active when compared to standard. The ED50 determined by a cell proliferation assay using human peripheral blood mononuclear cells is less than 10 ng/ml, corresponding to a specific activity of 1.0 × 105 IU/mg.</td></tr><tr><th>Storage</th><td colspan="7"> This lyophilized preparation is stable at 2-8 C, but should be kept at -20 C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 C to -70 C. Avoid repeated freeze/thaw cycles.</td></tr><tr><th>Formulation</th><td colspan="7"> Lyophilized from a 0.2um filtered concentrated, solution in PBS, pH 7.4.</td></tr><tr><th>Reconstitution</th><td colspan="7"> We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 C. Further dilutions should be made in appropriate buffered solutions.</td></tr><tr><th>Physical Appearance</th><td colspan="7"> Sterile Filtered White lyophilized (freeze-dried) powder.</td></tr><tr><th>Usage</th><td colspan="7"> This material is for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.</td></tr><tr><th>Sequence</th><td colspan="7"> MQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS </td></tr>
Similar products Interleukin-21
Lieferbar
Specificity Fully biologically active when compared to standard. The ED50 determined by a cell proliferation assay using human peripheral blood mononuclear cells is less than 10 ng/ml, corresponding to a specific activity of 1.0 x 105 IU/mg.
Specificity
Fully biologically active when compared to standard. The ED50 determined by a cell proliferation assay using human peripheral blood mononuclear cells is less than 10 ng/ml, corresponding to a specific activity of 1.0 x 105 IU/mg.
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 conjuction) 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 (gammac) 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.
Endotoxin Level
Less than 0.002 EU/ug of rHuIL-21 as determined by LAL method.
Formulation
Lyophilized from a 0.2um filtered concentrated, solution in PBS, pH 7.4.
M.W.
Approximately 15.4 kDa, a single non-glycosylated polypeptide chain containing 133 amino acids.
Product Line
Cytokine, Chemokines & Growth Factors
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 C. Further dilutions should be made in appropriate buffered solutions.
Storage
This lyophilized preparation is stable at 2-8 C, but should be kept at -20 C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 C to -70 C. Avoid repeated freeze/thaw cycles.
Usage
This material is for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.
Product Origin
USA

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Alle Produkte sind nur für Forschungszwecke bestimmt. Nicht für den menschlichen, tierärztlichen oder therapeutischen Gebrauch.

Menge: 1mg
Lieferbar: In stock
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