IFIT3 also known as Interferon-induced protein with tetratricopeptiede repeats 3 isoform a. IFN-induced antiviral protein which acts as an inhibitor of cellular as well as viral processes, cell migration, proliferation, signaling, and viral replication. IFIT3 is significantly induced upon RNA virus infection. Ectopic expression or knockdown of IFIT3 could, respectively, enhance or impair IRF3-mediated gene expression. Recombinant human IFIT3 was expressed in E.coli and purified by using conventional chromatography techniques