IL28B Active Protein | IFNL3 active protein

IL28B Protein, Human, Recombinant (His Tag)

Cat. Num. AAA8121006

• Gene Names: IFNL3; IL28B; IL28C; IL-28B
• Purity: >96% as determined by SDS-PAGE
• Synonyms: IL28B; IL28B Protein; Human; Recombinant (His Tag); Human IFNL3/IL28B/Interleukin-28B Protein (His Tag); IL-28B Protein; IL28C Protein; interferon; lambda 3; IFNL3 active protein

• Host: HEK293 Cells
• Purity/Purification: >96% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, 500mM NaCl, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Val196

• Species: Human
• Activity: Measured in antiviral assays using WISH cells infected with vesicular stomatitis virus. The ED50 for this effect is typically 4-16ng/mL.
• Endotoxin: <1.0EU per ug of the protein as determined by the LAL method
• Predicted N Terminal: Val 22
• Tag: C-His
• Protein 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.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; 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.

SDS-Page

Testing Data

(Measured in antiviral assays using WISH cells infected with vesicular stomatitis virus. The ED50 for this effect is typically 4-16 ng/mL.)

Related Product Information for IFNL3 active protein

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 (IFNlambda) 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.

References

Ge D, et al.. (2009) Genetic variation in IL28B predicts hepatitis C treatment-induced viral clearance. Nature. 461(7262): 399-401.Morrow MP, et al.. (2009) Comparative ability of IL-12 and IL-28B to regulate Treg populations and enhance adaptive cellular immunity. Blood. 113(23): 5868-77. Sheppard P, et al.. (2003) IL-28, IL-29 and their class II cytokine receptor IL-28R. Nat Immunol. 4(1): 63-8.

NCBI and Uniprot Product Information

• NCBI GI #: 28144901
• NCBI GeneID: 282617
• NCBI Accession #: NP_742151.2
• NCBI GenBank Nucleotide #: NM_172139.2
• UniProt Accession #: Q8IZI9; Q6VN56; Q7Z4J3; Q8IWL6; A2BDE1
• Molecular Weight: 21,706 Da
• NCBI Official Full Name: interferon lambda-3
• NCBI Official Synonym Full Names: interferon, lambda 3
• NCBI Official Symbol: IFNL3
• NCBI Official Synonym Symbols: IL28B; IL28C; IL-28B
• NCBI Protein Information: interferon lambda-3; IL-28C; IFN-lambda-3; IFN-lambda-4; interleukin 28C; interleukin-28B; interleukin-28C; cytokine Zcyto22; interferon lambda-4; interferon, lambda 4; interleukin 28B (interferon, lambda 3)
• UniProt Protein Name: Interferon lambda-3
• Protein Family: Interferon
• UniProt Gene Name: IFNL3
• UniProt Synonym Gene Names: IL28B; IL28C; ZCYTO22; IFN-lambda-3; IL-28B; IL-28C
• UniProt Entry Name: IFNL3_HUMAN

NCBI Description

This gene encodes a cytokine distantly related to type I interferons and the IL-10 family. This gene, interleukin 28A (IL28A), and interleukin 29 (IL29) are three closely related cytokine genes that form a cytokine gene cluster on a chromosomal region mapped to 19q13. Expression of the cytokines encoded by the three genes can be induced by viral infection. All three cytokines have been shown to interact with a heterodimeric class II cytokine receptor that consists of interleukin 10 receptor, beta (IL10RB) and interleukin 28 receptor, alpha (IL28RA). [provided by RefSeq, Jul 2008]

Uniprot Description

IL-28B: Cytokine with immunomodulatory activity. Up-regulates MHC class I antigen expression. Displays potent antiviral activity. Also displays antitumor activity. 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. Belongs to the IL-28/IL-29 family.

Protein type: Secreted; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 19q13.13

Cellular Component: extracellular space

Molecular Function: cytokine activity

Biological Process: positive regulation of immune response; negative regulation of viral genome replication; JAK-STAT cascade; defense response to virus

Disease: Hepatitis C Virus, Susceptibility To