The IFN-lambda gene family is composed of three distinct genes: IFN-lambda1 (IL29), IFN-lambda2 (IL28A), and IFN-lambda3 (IL28B). IFN-lambda proteins exhibit only weak homology to IL10, but like IL10, they also use the IL10R2 chain as a component of their receptor complex. The IFN-receptor complex consists of the unique ligand-binding chain IFN- R. The IFN-lambda-1 gene is found exclusively in primate genomes and is 81% identical to IFN-lambda-2/3. IFN-lambda-s, which are now collectively referred to as type III IFNs, exhibit several features in common with type I IFNs, such as antiviral, antiproliferative, and antitumor activities. Recombinant Human IL29 is expressed in human 293 cells as a glycoprotein with a molecular mass of 29 and 35 kDa.
<1 EU/µg of recombinant protein as determined by the LAL method
Biological Activity Comment
The EC(50) as determined by the dose-dependent protection of the cytopathic effect on A549 cells (human lung adenocarcinoma epithelial cell line) that were challenged with encephalomyocarditis (EMC) virus was found to be ≤ 5 ng/mL.
Weight
29 and 35 kDa, monomer, glycosylated
Description
A quick spin of the vial followed by reconstitution in sterile 1xPBS containing 0.1% endotoxin-free recombinant human serum albumin (HSA).
Format
Lyophilized Powder1x PBS
Purity
>95% as determined by SDS-PAGE
Storage
The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°C for one month, or at -20°C for six months. Avoid repeated freeze/thaw cycles.