{"product_id":"recombinant-il-21-human-bk0098","title":"Recombinant IL-21, Human - BK0098","description":"\u003cp\u003eRecombinant IL-21, Human\u003c\/p\u003e\n\n\u003cp\u003eCatalogue Numbers: BK0098-10, BK0098-50\u003c\/p\u003e\n\n\u003cp\u003eSizes: 10μg, 50μg\u003c\/p\u003e\n\n\u003cp\u003eSource: Escherichia coli\u003c\/p\u003e\n\n\u003cp\u003eMolecular Weight: 15.4 kDa, observed by reducing SDS-PAGE.\u003c\/p\u003e\n\n\u003cp\u003ePurity: \u0026gt; 95% by SDS-PAGE analysis.\u003c\/p\u003e\n\n\u003cp\u003eBiological Activity: ED50 \u0026lt; 0.5 ng\/mL, measured by a cell growth inhibition assay using Mino cells, corresponding to a specific activity of \u0026gt; 2.0× 10ˆ6 units\/mg.\u003c\/p\u003e\n\n\u003cp\u003ePhysical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.\u003c\/p\u003e\n\n\u003cp\u003eFormulation: Lyophilized after extensive dialysis against PBS.\u003c\/p\u003e\n\n\u003cp\u003eAA Sequence: MQDRHMIRM RQLIDIVDQL KNYVNDLVPE FLPAPEDVET NCEWSAFSCF QKAQLKSANT GNNERIINVS IKKLKRKPPS TNAGRRQKHR LTCPSCDSYE KKPPKEFLER FKSLLQKMIH QHLSSRTHGS EDS\u003c\/p\u003e\n\n\u003cp\u003eEndotoxin: \u0026lt; 0.2 EU\/μg, determined by LAL method.\u003c\/p\u003e\n\n\u003cp\u003eReconstitution: Reconstituted in ddH2O at 100 μg\/mL.\u003c\/p\u003e\n\n\u003cp\u003eStorage: Lyophilized recombinant human Interleukin-21 (rhIL-21) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhIL-21 should be stable up to 2 weeks at 4°C or up to 3 months at -20°C.\u003c\/p\u003e\n\n\u003cp\u003eUsage: This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.\u003c\/p\u003e\n\n\u003cp\u003eDescription: Interleukin-21 (IL-21) belongs to the Type I four helix bundle cytokines, and shares the common cytokine receptor γ chain with IL-2, IL-4, IL-7, IL-9, and IL-15. IL-21 is expressed by CD4+ T cells, natural killer (NK) T cells, and Th17 cells, and the IL-21 receptor is highly expressed on CD4+ and CD8+ B cells; indeed, IL-21 plays a pivotal role in the survival and proliferation of B cells, and their differentiation to immunoglobulin (Ig) producing cells. IL-21 up-regulates and down-regulates the production of IgG1 and IgE by B cells, respectively, and diminishes the severity of allergy and asthma. In some case, IL-21 also induces the apoptosis of B cells. The other roles of IL-21 include regulation of innate immune systems, implication on autoimmunity, and antitumor actions.Recombinant human Interleukin-21 (rhIL-21) produced in E.coli is a single non-glycosylated polypeptide chain containing 132 amino acids. A fully biologically active molecule, rhIL-21 has a molecular mass of 15.4 kDa analyzed by reducing SDS-PAGE and is obtained by proprietary chromatographic techniques at GenScript.\u003c\/p\u003e","brand":"BioWorld","offers":[{"title":"10μg","offer_id":42882242281651,"sku":"BK0098-10","price":256.94,"currency_code":"CAD","in_stock":true},{"title":"50μg","offer_id":42882242314419,"sku":"BK0098-50","price":813.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/9482\/6376\/products\/thumbnail_d1447bac803ec9be_11-14-09-19-51_f68d55ba-7965-4642-8c62-03d2243bec94.jpg?v=1702049913","url":"https:\/\/afsbio.com\/products\/recombinant-il-21-human-bk0098","provider":"AFSBio Inc.","version":"1.0","type":"link"}