Interferon-alpha/IFNA5 Protein, Human, Recombinant (hFc Tag)

• Background:

  Interferon, alpha 5 (IFNA5) belongs to the alpha/beta interferon family. IFNA5 is the only IFNA subtype detected in normal liver, while a mixture of subtypes is observed in the liver tissue of patients with chronic hepatitis C. Interferons are produced by macrophages, IFN-alpha has antiviral activities. Interferon stimulates the production of two enzymes: a protein kinase and an oligoadenylate synthetase. IFN-alpha, the first cytokine to be produced by recombinant DNA technology, has emerged as an important regulator of growth and differentiation, affecting cellular communication and signal transduction pathways as well as immunological control. Originally discovered as an antiviral substance, the efficacy of IFN-alpha in malignant, viral, immunological, angiogenic, inflammatory, and fibrotic diseases suggests a spectrum of interrelated pathophysiologies. IFN-alpha emerged as a prototypic tumor suppressor protein that represses the clinical tumorigenic phenotype in some malignancies capable of differentiation.

• Synonyms:

  IFN-alpha Protein, Human; IFN-alpha-5 Protein, Human; IFN-alphaG Protein, Human; INA5 Protein, Human; INFA5 Protein, Human; leIF G Protein, Human; RP11-380P16.5 Protein, Human

• Gene Name:

  Interferon, alpha 5

• Expression System:

  HEK293 Cells

• Tag:

  N-hFc

• Endotoxin:

  < 1.0 EU per μg of the protein as determined by the LAL method.

• Purity:

  > 95 % as determined by SDS-PAGE.

• Activity:

  Measured in antiviral assays using WISH human amnion cells infected with vesicular stomatitis virus (VSV) . The ECfor this effect is 0.16-0.8 ng/mL.

• Form:

  Lyophilized

• Buffer:

  Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

• Function:

  Cytokine Proteins, Growth Factor proteins, Biological Target proteins

• Molecular Weight:

  The recombinant human IFNα G/Fc chimera is a disulfide-linked homodimer. The reduced monomer comprises 405 amino acids with a predicted molecular mass of 46.3 kDa. As a result of glycosylation, rh IFNα G/Fc monomer migrates as an approximately 48-50 kDa band in SDS-PAGE under reducing conditions.

• Storage Conditions:

  In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.

• Symbol:

  IFNA5

• Species:

  Human

• Protein ID:

  NP_002160.1

• Overview:

  A DNA sequence encoding the human IFNα G (NP_002160.1) (Leu 22-Glu 189) was fused with the Fc region of human IgG1 at the N-terminus.

• AA Sequence:

  Leu22-Glu189

• Protein ID Link:

  https://www.ncbi.nlm.nih.gov/protein/NP_002160.1