Eukaryotic translation initiation factor 2-alpha kinase 2 ; eIF-2A protein kinase 2 ; Interferon-inducible RNA-dependent protein kinase ; Protein kinase RNA-activated ; PKR ; Tyrosine-protein kinase EIF2AK2 ; 2.7.10.2 ; Prkr
Categories
Elisa
Function
Following activation by double-stranded RNA in the presence of ATP, the kinase becomes autophosphorylated and can catalyze the phosphorylation of the translation initiation factor EIF2S1, which leads to an inhibition of the initiation of protein synthesis. Double-stranded RNA is generated during the course of a viral infection. In adddition to serine/threonine-protein kinase activity, also has tyrosine-protein kinase activity: phosphorylates CDK1 upon DNA damage. CDK1 phosphorylation triggers CDK1 polyubiquitination and subsequent proteolysis, thus leading to G2 arrest.
Specificity
Natural and recombinant Rat Interferon-induced, double-stranded RNA-activated protein kinase