Interferon-alpha 2b (IFNα 2b) is a Type I interferon made by leukocytes during viral infection. It has anti-viral and non-proliferative activity induced by JAK1-STAT signaling. IFN-alphas are the most widely used type for therapeutic purposes. IFNα 2b is a variant of IFNα 2a that differs by one amino acid.
>98% by SDS-PAGE and HPLC
<1.0 EU/µg as determined by the LAL method
Protein Accession No.
State of Matter
Predicted Molecular Mass
The molecular weight of Recombinant Human IFN-alpha 2b is Mr 19.4 kDa.
Storage and Stability
The lyophilized protein should be stored desiccated at -20°C. The reconstituted protein can be stored for at least one week at 4°C. For long-term storage of the reconstituted protein, aliquot into working volumes and store at -20°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles.
Country of Origin
Next Day 2-8°C
NCBI Gene Bank
IMPORTANT Use lot specific datasheet for all technical information pertaining to this recombinant protein.
Products are for research use only. Not for use in diagnostic or therapeutic procedures.