{"product_id":"recombinant-human-interferon-α2b-rhuifn-α2b-pr1048","title":"Recombinant Human Interferon-α2b (rHuIFN-α2b) - PR1048","description":"\u003cp\u003eRecombinant Human Interferon-α2b (rHuIFN-α2b)\u003c\/p\u003e\n\n\u003cp\u003eCatalogue Numbers: PR1048-20, PR1048-100\u003c\/p\u003e\n\n\u003cp\u003eSizes: 20µg, 100µg\u003c\/p\u003e\n\n\u003cp\u003eSource: Saccharomyces cerevisiae\u003c\/p\u003e\n\n\u003cp\u003eMolecular Weight: Approximately 19 kDa, a single non-glycosylated polypeptide chain containing 165 amino acids\u003c\/p\u003e\n\n\u003cp\u003ePurity: \u0026gt;98% by SDS-PAGE and HPLC analyses.\u003c\/p\u003e\n\n\u003cp\u003eBiological Activity: Fully biologically active when compared to standard. Fully biologically active when compared to standard. The specific activity as determined in a viral resistance assay was found to be no less than 1.6×108 IU\/ mg.\u003c\/p\u003e\n\n\u003cp\u003ePhysical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.\u003c\/p\u003e\n\n\u003cp\u003eFormulation: Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.\u003c\/p\u003e\n\n\u003cp\u003eAA Sequence: CDLPQTHSLG SRRTLMLLAQ MRRISLFSCL KDRHDFGFPQ EEFGNQFQKA\u003cbr\u003e\n ETIPVLHEMI QQIFNLFSTK DSSAAWDETL LDKFYTELYQ QLNDLEACVI\u003cbr\u003e\n QGVGVTETPL MKEDSILAVR KYFQRITLYL KEKKYSPCAW EVVRAEIMRS\u003cbr\u003e\n FSLSTNLQES LRSKE\u003c\/p\u003e\n\n\u003cp\u003eEndotoxin: Less than 1EU\/mg of rHuIFN-a2b as determined by LAL method.\u003c\/p\u003e\n\n\u003cp\u003eReconstitution: 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 \u0026lt;-20°C. Further dilutions should be made in appropriate buffered solutions\u003c\/p\u003e\n\n\u003cp\u003eStorage: This lyophilized preparation is stable for several weeks 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.\u003c\/p\u003e\n\n\u003cp\u003eUsage: This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE. Made in China\u003c\/p\u003e\n\n\u003cp\u003eDescription: At least 23 different variants of IFN-alpha are known. The individual proteins have molecular masses between 19-26 kDa and consist of proteins with lengths of 156-166 and 172 amino acids. All IFN-alpha subtypes possess a common conserved sequence region between amino acid positions 115-151 while the amino-terminal ends are variable. Many IFN-alpha subtypes differ in their sequences at only one or two positions. Naturally occurring variants also include proteins truncated by 10 amino acids at the carboxy-terminal end.\u003c\/p\u003e","brand":"BioWorld","offers":[{"title":"20µg","offer_id":42882230681779,"sku":"PR1048-20","price":0.0,"currency_code":"CAD","in_stock":true},{"title":"100µg","offer_id":42882230714547,"sku":"PR1048-100","price":0.0,"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_970558ce-7b67-4602-a094-62024da5ee25.jpg?v=1702049722","url":"https:\/\/afsbio.com\/products\/recombinant-human-interferon-%ce%b12b-rhuifn-%ce%b12b-pr1048","provider":"AFSBio Inc.","version":"1.0","type":"link"}