IFN alpha 1a Protein

Description:
|Introduction 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. |Reco|E. coli-derived. A single, non-glycosylated, polypeptide chain containing 165 amino acids and having a molecular mass of 19.4 kDa. The specific activity as determined in a viral resistance assay viral ressistance assay was found to be 1 x 100,000,000 IU/ mg. Purity > 95%, by SDS-|Lyophilized from a (1 ug/ml) solution in containing 1X PBS pH-7.4. Reconstitution: It is recommended to reconstitute the lyophilized IFN alpha 1a in sterile 18 M?-cm H2O not less than 100 ug/ml, which can then be further diluted to other aqueous solutions. Shipping: The product is shipped at a|Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70°C as supplied. 1 month, 2 to 8°C under sterile conditions after reconstitution. 3 months, -20 to -70°C under sterile conditions after reconstitution.