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This peptide corresponds to 14 amino acids near the carboxy terminus of human PKR.
PEP-0417 can be used as a blocking peptide with polyclonal antibody PA5-20283.
EIF2AK2 (PKR) is one of 4 kinases that specifically phosphorylate Ser51 of translation initiation factor eIF2-alpha in response to various environmental stresses. EIF2AK2 plays a key role in antiviral defense mediated through its direct activation by double-stranded RNA produced by viral infection. PKR plays a key role in IFN induced-innate antiviral response, virus-induced apoptosis, cell growth & differentiation. PKR induces apoptosis by up-regulating Fas expression and mediates FADD/Caspase-8 death signaling pathway. Upon viral infection, it functions as a dual protein, sequentially activating both cell survival & cell death pathways using kinase independent and dependent strategies. PRKR regulates multiple pathways which include NF-kappaB activation, p53, p38, & PDGF signaling pathway. PKR has been implicated in tumor suppression & malignancy. To evade the antiviral effects of PKR, viruses have evolved multiple mechanisms, such as the inhibition of PKR by the non-structural protein (NS1) of the influenza virus. More recently, PKR has been implicated in several neurodegenerative diseases including Alzheimer, Huntington, and amyotrophic lateral sclerosis.
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Protein Aliases: double stranded RNA activated protein kinase; EC 2.7.11.1; eIF-2A protein kinase 2; eIF2a Kinase; Eukaryotic translation initiation factor 2-alpha kinase 2; Interferon-induced, double-stranded RNA-activated protein kinase; interferon-inducible elF2alpha kinase; Interferon-inducible RNA-dependent protein kinase; MGC126524; OTTHUMP00000201320; P1/eIF-2A protein kinase; p68 kinase; PKR; protein kinase R; Protein kinase RNA-activated; protein kinase, interferon-inducible double stranded RNA dependent; protein phosphatase 1, regulatory subunit 83; Tyrosine-protein kinase EIF2AK2
Gene Aliases: EIF2AK1; EIF2AK2; PKR; PPP1R83; PRKR
UniProt ID: (Human) P19525
Entrez Gene ID: (Human) 5610
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