Approximately 19.5 kDa, a single non-glycosylated polypeptide chain containing 167 amino acids.
>97% by SDS-PAGE and HPLC analyses.
Fully biologically active when compared to standard. The specific activity determined by an anti-viral assay is no less than 1.0 x 108 IU/mg.
Sterile Filtered White lyophilized (freeze-dried) powder.
Lyophilized from a 0.2μm filtered solution in PBS, pH 7.4,containing 3% Mannitol,5% Trehalose,0.05% Tween-80.
Less than 0.1EU/μg of rHuIFN-α1a as determined by LAL method.
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 <-20°C. Further dilutions should be made in appropriate buffered solutions.
This lyophilized preparation is stable 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.
This material is offered by Shanghai PrimeGene Bio-Tech for research, laboratory or further evaluation purposes. NOT FOR HUMAN USE.