PKR [p Thr451] Antibody


Immunohistochemistry-Paraffin: PKR [p Thr451] Antibody [NBP1-51470] Analyzes of p-PKR (T451) pAb in paraffin-embedded human colon carcinoma tissue.

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PKR [p Thr451] Antibody Summary

Synthetic phosphopeptide derived from human PKR around the phosphorylation site of Threonine 451.
p Thr451
p-PKR (T451) pAb detects endogenous levels of PKR protein only when phosphorylated at T451.
Immunogen affinity purified
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  • Immunohistochemistry 1:10-1:500
  • Immunohistochemistry-Paraffin 1:50-1:200
Application Notes
Immunohistochemistry (IHC) analyzes of p-PKR (T451) pAb in paraffin-embedded human colon carcinoma tissue.
Theoretical MW
62 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Reactivity Notes

Cross reacts with Human.

Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
PBS (pH 7.2)
0.05% Sodium Azide
1.0 mg/ml
Immunogen affinity purified

Alternate Names for PKR [p Thr451] Antibody

  • double stranded RNA activated protein kinase
  • EC
  • eIF-2A protein kinase 2
  • EIF2AK1
  • EIF2AK2
  • eukaryotic translation initiation factor 2-alpha kinase 2P1/eIF-2A protein kinase
  • interferon-induced, double-stranded RNA-activated protein kinase
  • interferon-inducible double stranded RNA dependent
  • interferon-inducible elF2alpha kinase
  • Interferon-inducible RNA-dependent protein kinase
  • P68 Kinase
  • PKR
  • PKRp68 kinase
  • PPP1R83
  • PRKR
  • PRKRMGC126524
  • Protein Kinase R
  • Protein kinase RNA-activated


An interferon-inducible, RNA-dependent protein Serine/Threonine kinase, PKR has various designations. Mouse PKR is known as DAI, dsJ, PI kinase, p65, p67 or TIK, whereas human PKR is known as p68 or p69. PKR phosphorylates its substrate, a subunit of protein synthesis initiation factor eIF-2, on Ser 51 to inhibit translation. PKR contains two dsRNA binding motifs required for its activation by dsRNA. Three kinds of regulation of PKR enzymatic activity occur, and these include transcriptional regulation in response to interferon, an autoregulatory mechanism controlling PKR expression at the level of translation, and post-translational regulation by RNA mediated autophosphorylation. Human PKR contains at least 15 autophosphorylation sites, but only Thr 446 and Thr 451 in the activation loop are critical for its kinase activity. Thr 446 is the in vivo autophosphorylation site of PKR.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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eIF2alpha - a regulator of global translation in response to cellular stress
Eukaryotic initiation factor 2 (eIF2) regulates global protein translation by binding to Met-tRNA and the 40S ribosome to form the pre-initiation complex. eIF2 is a heterotrimer consisting of alpha, beta, and gamma subunits. The 36kDA eIF2a subuni...  Read full blog post.

PKR - Mediating cellular stress responses through multiple signaling pathways
Protein kinase R (PKR) is an intracellular stress-sensing protein that is able to detect and respond to viral infections. While PKR is able to sense and respond to a variety of signals, dsRNA is a well-characterized ligand. dsRNA produced during v...  Read full blog post.

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Gene Symbol EIF2AK2