Human IFN Beta 1b, E.coli

Product Features: 
  • Human IFN Beta 1bE.coli, recombinant protein
  • Type I IFN
  • Single non-glycosylated polypeptide chain, serine replace cysteine at residue 17


Catalog No. Pack Size Price Quantity

1 x 105 units



Formulation Supplied frozen with a carrier protein
Molecular Weight 20 kDa
Source cDNA obtained from human fibroblast interferon beta mRNA expressed in E.coli
Purity > 95% by SDS-PAGE stained by Coomassie Blue
Endotoxin level < 1 EU/μg
Bioactivity Measured using a cytopathic inhibition assay on human lung carcinoma cell line A549 with encephalomyocarditis virus (EMCV). EC50 for IFN beta 1b in this assay is ~ 1 U/ml
Synonyms Human IFNB, Human Beta Interferon, Human IFN Beta 1b, Human Interferon beta 1b, Human Type I Interferon Beta, Human IFN B
Storage For retention of full activity store at -70°C or below and avoid repeated freeze/thaw cycles
Accession Number V00534


Human IFN Beta 1b, E.coli Titration in A549

Titration of Human Interferon Beta 1b, E.coli in the A549 Cell Line

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