IFN-λ1, Human

IL-28A, IL-28B, and IL-29, also named interferon-lambda2 (IFN-lambda2), IFN-lambda3, and IFN-lambda1, respectively, are newly identified class II cytokine receptor ligands that are distantly related to members of the IL-10 family (11-13% aa sequence identity) and the type I IFN family (15-19% aa sequence identity). The expression of IL-28A, B, and IL-29 is induced by virus infection or double-stranded RNA. All three cytokines exert bioactivities that overlap those of type I IFNs, including antiviral activity and up-regulation of MHC class I antigen expression. The three proteins signal through the same heterodimeric receptor complex that is composed of the IL-10 receptor beta (IL-10 Rbeta) and a novel IL-28 receptor alpha (IL-28 Ralpha, also known as IFN-lambdaR1). Ligand binding to the receptor complex induces Jak kinase activation and STAT1 and STAT2 tyrosine phosphorylation.

Lyophilized from a 0.2um filtered concentrated, solution in 20mM PB, pH 7.4, 130mM NaCl.

Cytokine, Chemokines & Growth Factors

This lyophilized preparation is stable at 2-8 C, but should be kept at -20 C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 C to -70 C. Avoid repeated freeze/thaw cycles.

Proteins

USA