Recombinant Human IFN-α 2a

Code Description Price Qty
GFH54-20 Human IFN-α 2a, 20 μg $75.00
GFH54-100 Human IFN-α 2a, 100 μg $189.00
GFH54-250 Human IFN-α 2a, 250 μg $390.00
GFH54-1000 Human IFN-α 2a, 1 mg $1,130.00
Viral CPE assay using EMC virus on A549 cells for Human IFN-α 2a.
Non-reducing (-) and reducing (+) conditions in a 4 - 20% Tris-Glycine gel stained with Coomassie Blue. 1 μg of protein was loaded in each lane. Human IFN-α 2a has a predicted Mw of 19.4 kDa.

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Interferon-α 2a (IFN-α 2a) is a type I interferon made by leukocytes during viral infection. The JAK-STAT pathway mediates the antiviral and anti-cell proliferation activities of IFN-α 2a. IFN-α proteins are widely used as standard treatments during antiviral and antineoplastic therapies. The IFN-α 2a variant differs from IFN-α 2b by one amino acid.

Activity Assay

Human IFN-α 2a is fully biologically active when compared to standard. The activity is determined by the viral CPE assay using EMC virus on A549 cells. The activity corresponds to an expected specific activity of 2.0 x 108 units/mg.

AA Sequence


Alternative Names

Interferon-α 2b, interferon-alpha, interferon alpha, type I Interferon α 2, IFN α 2
Product Details
Length 166 aa
Molecular Weight 19.4 kDa
Structure Monomer
Source E. coli
Accession Number P01563
Purity ≥95% determined by reducing and non-reducing SDS-PAGE
Endotoxin Level ≤1.00 EU/μg as measured by kinetic LAL
Formulation Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)
Reconstitution Centrifuge vial before opening. When reconstituting the product, gently pipet and wash down the sides of the vial to ensure full recovery of the protein into solution. It is recommended to reconstitute the lyophilized product with sterile water at 0.1 mg/ml, which can be further diluted into other aqueous solutions.
Stability and Storage

12 months from date of receipt when stored at -20°C to -80°C as supplied. 1 month when stored at 4°C after reconstituting as directed. 3 months when stored at -20°C to -80°C after reconstituting as directed.