IL-28B Protein, Human, Recombinant (His)

Catalog No. TMPY-01872

IL-28B Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 21 kDa and the accession number is A0A7R8C2Z6.

IL-28B Protein, Human, Recombinant (His)

Catalog No. TMPY-01872

IL-28B Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 21 kDa and the accession number is A0A7R8C2Z6.

Pack Size	Price	Availability
50 μg	$245	In Stock
100 μg	$413	7-10 days
200 μg	$693	7-10 days
500 μg	$1,370	7-10 days

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COA User Guide of Recombinant Proteins

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Product Information

Biological Activity	Measured in antiviral assays using WISH cells infected with vesicular stomatitis virus. The ED50 for this effect is typically 4-16 ng/mL.
Description	IL-28B Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 21 kDa and the accession number is A0A7R8C2Z6.
Species	Human
Expression System	HEK293 Cells
Tag	C-His
Accession Number	Q8IZI9
Synonyms	interferon, λ3,interferon, lambda 3,IL28C,IL-28B,IL28B
Construction	A DNA sequence encoding the human IL28B (NP_742151.2) (Met 1-Val 196) was expressed, with a polyhistidine tag at the C-terminus. Predicted N terminal: Val 22
Protein Purity	> 96 % as determined by SDS-PAGE
Molecular Weight	21 kDa (predicted); 23 kDa (reducing conditions)
Endotoxin	< 1.0 EU/μg of the protein as determined by the LAL method.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, 500 mM NaCl, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization.
Reconstitution	A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.
Stability & Storage	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
Shipping	In general, Lyophilized powders are shipping with blue ice.
Research Background	Interleukin-28B (IL-28B) also known as Interferon lambda-3 and IFN-lambda-3, belongs to the type III interferon family of cytokines and are highly similar to IL-29. IL-28B belongs to the newly described interferon lambda (IFNλ) family of cytokines. IL-28B is a cytokine with immunomodulatory activity. It functions in Up-regulating MHC class I antigen expression. IL-28B displays potent antiviral activity and antitumor activity. This cytokine serves as a ligand for the heterodimeric class II cytokine receptor composed of IL10RB and IL28RA. The ligand/receptor complex seems to signal through the Jak-STAT pathway. IL-28B, like IL-12, is capable of robustly enhancing adaptive immunity. Moreover, we describe for the first time how IL-28B reduces regulatory T-cell populations during DNA vaccination, whereas IL-12 increases this cellular subset. We also show that IL-28B, unlike IL-12, can increase the percentage of splenic CD8+ T cells in vaccinated animals and that these cells are more granular and have higher antigen-specific cytolytic degranulation compared with cells taken from animals that received IL-12 as an adjuvant.