• HEK293 expressed
  • Endotoxin-free
  • Animal-component free

HumanKine® recombinant human IFN alpha 2B protein


Typically ≤ 0.12 ng/mL

Specific Activity

minimally 5.00 x 107 IU/mg

Species Reactivity




Cat no : HZ-1072


IFN alpha 2, IFNA, IFNA2, INFA2, Interferon alpha 2, Interferon alpha A, interferon, alpha 2, LeIF A

Technical Specifications

GeneID 3440
Species Human
Expression HEK293
Activity(Primary) Typically ≤ 0.12 ng/mL
Specific Activityminimally 5.00 x 107 IU/mg
Purity >95%
Endotoxin<1 EU/μg
Accession NumberP01563
Molecular Mass 18 to 22 kDa reduced, 16 to 18 kDa non-reduced, monomer, glycosylated
Formulation 1x PBS, See Certificate of Analysis for details
Species Reactivity human

Stability and Reconstitution

Stability and StorageProduct FormTemperature ConditionsStorage Time
(From Date of Receipt)
Lyophilized-20°C to -80°CUntil Expiry Date
LyophilizedRoom Temperature2 weeks
Reconstituted as per CofA-20°C to -80°C6 months
Reconstituted as per CofA4°C1 week
Avoid repeated freeze-thaw cycles.
Reconstitution Briefly centrifuge the vial before opening. It is recommended to reconstitute the protein to 0.2 mg/mL in sterile 1x PBS pH 7.4 containing 0.1% endotoxin-free recombinant human serum albumin (HSA). Gently swirl or tap vial to mix.


Interferon alpha 2 is a type 1 interferon secreted by virus-infected cells to protect surrounding cells from the pathogen. Recombinant human interferon alpha 2 has been approved for therapeutic application in a range of human oncological and viral diseases. Three Interferon alpha 2 subvariants (2A, 2B, 2C) differ by only one or two amino acids at positions 23 and/or 34 of the mature protein (PMID: 25982860; 10672347; 1694761)


IFN alpha 2, IFNA, IFNA2, INFA2, Interferon alpha 2, Interferon alpha A, interferon, alpha 2, LeIF A



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