Recombinant human IFN-β is supplied as lyophilized material that is very stable at -20ºC. It is recommended to reconstitute with sterile water at a concentration of 0.1 mg/mL which can be further diluted in aqueous solutions as needed. Addition of a carrier protein (0.1% HSA or BSA) is recommended for long-term storage.
Once in solution, store at 4ºC and use within 1 month, or store at -20ºC to -80ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles if storing reconstituted material at -20ºC to -80ºC.
Product Description
MW (kDa)
23
Purity
A greater than 95% purity was determined by SDS-PAGE.
Endotoxin
Endotoxin levels are less than 0.2 EU/ 1 μg h-IFNβ.
Activity
The bioactivity of hIFN-β was determined in a TF-1 cell proliferation assay. The ED50 of each lot is less than 0.1 ng/mL.
Source / Purification
Recombinant human IFN-β was expressed in 293 cells and is supplied in a lyophilized form.
