A number of ELISA Kits are available that target Eukaryotic Translation Initiation Factor 2-alpha kinase 2, an alias of the protein, eukaryotic translation initiation factor 2 alpha kinase 2. The human protein, encoded by the gene EIF2AK2, is an enzyme and member of the Protein kinase superfamily, Ser/Thr protein kinase family, GCN2 subfamily. The protein's cellular localization is indicated to be cytoplasmic and nuclear. Additional synonyms or past names for this protein may include: EIF2AK1, PKR, PPP1R83, PRKR. Homology is conserved in other species, such as Mouse, Rat, Zebrafish, Frog, Chicken.