{"product_id":"recombinant-human-interleukin-4-il-4-protein-his-tagactive-pksh032649","title":"Recombinant Human Interleukin-4\/IL-4 Protein (His Tag)(Active) - PKSH032649","description":"\u003cp\u003eRecombinant Human Interleukin-4\/IL-4 Protein (His Tag)(Active)\u003c\/p\u003e\n\n\u003cp\u003eSizes: 10μg, 50μg\u003c\/p\u003e\n\n\u003cp\u003eCatalogue Numbers: PKSH032649-10, PKSH032649-50\u003c\/p\u003e\n\n\u003cp\u003eCitations, Manuals and MSDS Available upon request.\u003c\/p\u003e\n\n\u003cp\u003eAbbreviation: Interleukin-4; IL-4\u003c\/p\u003e\n\n\u003cp\u003eTarget Symptom: Interleukin-4; IL-4; B-Cell Stimulatory Factor 1; BSF-1; Binetrakin; Lymphocyte Stimulatory Factor 1; Pitrakinra; IL4\u003c\/p\u003e\n\n\u003cp\u003eResearch Area: Cancer; immunology\u003c\/p\u003e\n\n\u003cp\u003eTarget Species: Human\u003c\/p\u003e\n\n\u003cp\u003eExpression Host: HEK293 Cells\u003c\/p\u003e\n\n\u003cp\u003eApplication: Cell culture\u003c\/p\u003e\n\n\u003cp\u003eFusion Tag: C-6His\u003c\/p\u003e\n\n\u003cp\u003eUNIProt ID: P05112\u003c\/p\u003e\n\n\u003cp\u003eAccession: P05112\u003c\/p\u003e\n\n\u003cp\u003eBackground: Interleukin-4 (IL-4) is a pleiotropic cytokine that regulates diverse T and B cell responses including cell proliferation; survival and gene expression. IL-4 is produced by mast cells; T cells; and bone marrow stromal cells. IL-4 regulates the differentiation of naive CD4+ T cells into helper Th2 cells; characterized by their cytokine-secretion profile that includes secretion of IL-4; IL-5; IL-6; IL-10; and IL-13; which favor a humoral immune response. Another dominant function of IL-4 is the regulation of immunoglobulin class switching to the IgG1 and IgE isotypes. Excessive IL-4 production by Th2 cells has been associated with elevated IgE production and allergic response.\u003c\/p\u003e\n\n\u003cp\u003eActivity: Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. The ED50 for this effect is 0.05-0.5 ng\/ml.\u003c\/p\u003e\n\n\u003cp\u003eSequence: His25-Ser153\u003c\/p\u003e\n\n\u003cp\u003ePurity: \u0026gt; 95 % as determined by reducing SDS-PAGE.\u003c\/p\u003e\n\n\u003cp\u003eFormulation: Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4.\u003cbr\u003e\nNormally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.\u003cbr\u003e\nPlease refer to the specific buffer information in the printed manual.\u003c\/p\u003e\n\n\u003cp\u003eReconstitution: Please refer to the printed manual for detailed information.\u003c\/p\u003e\n\n\u003cp\u003eEndotoxin: \u0026lt; 1.0 EU per μg of the protein as determined by the LAL method.\u003c\/p\u003e\n\n\u003cp\u003eCalculated MW: 16.0 kDa\u003c\/p\u003e\n\n\u003cp\u003eObserved MW: 18 kDa\u003c\/p\u003e\n\n\u003cp\u003eStorage: Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at \u0026lt; -20℃ for 3 months.\u003c\/p\u003e\n\n\u003cp\u003eShipping: This product is provided as lyophilized powder which is shipped with ice packs.\u003c\/p\u003e\n\n\u003cp\u003eResearch Use Only\u003c\/p\u003e","brand":"Elabscience","offers":[{"title":"10μg","offer_id":43118148059315,"sku":"PKSH032649-10","price":180.6,"currency_code":"CAD","in_stock":true},{"title":"50μg","offer_id":43118148092083,"sku":"PKSH032649-50","price":525.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/9482\/6376\/products\/logo_new_1affc7e3-8cb9-4b1e-8ede-671cb48a7293.png?v=1709637078","url":"https:\/\/afsbio.com\/products\/recombinant-human-interleukin-4-il-4-protein-his-tagactive-pksh032649","provider":"AFSBio Inc.","version":"1.0","type":"link"}