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Key Documents

P6493

Sigma-Aldrich

Anti-phospho-PKR (pThr451) antibody produced in rabbit

affinity isolated antibody, buffered aqueous glycerol solution

Synonyme(s) :

Anti-phospho-Interferon-Inducible Double-Stranded RNA-Dependent Protein (pThr451)

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About This Item

Numéro MDL:
Code UNSPSC :
12352203
Nomenclature NACRES :
NA.44

Source biologique

rabbit

Niveau de qualité

Conjugué

unconjugated

Forme d'anticorps

affinity isolated antibody

Type de produit anticorps

primary antibodies

Clone

polyclonal

Forme

buffered aqueous glycerol solution

Poids mol.

antigen 65-68 kDa

Espèces réactives

mouse, human

Technique(s)

immunoblotting: suitable using human HeLa cells stimulated with IFNγ and calyculin

Numéro d'accès UniProt

Conditions d'expédition

wet ice

Température de stockage

−20°C

Modification post-traductionnelle de la cible

phosphorylation (pThr451)

Informations sur le gène

human ... EIF2AK2(5610)
mouse ... Eif2ak2(19106)

Description générale

Protein kinase regulated by RNA (PKR) is an interferon-inducible ser/thr protein kinase, activated by stress signals and double-stranded RNA (dsRNA). In response to viral infection, PKR is activated by dsRNA-mediated dimerization and autophosphorylation. α-subunit of protein synthesis initiation factor 2 (eIF-2α) is well-studied substrate of PKR. Activation by PKR leads to phosphorylation on Ser51 that result in inhibition of translation. Human PKR contains at least 15 autophosphorylation sites. But phosphorylation on threonine 446 and 451 in the PKR activation loop is required in vivo and in vitro for high-level kinase activity. PKR is implicated in signalling pathways that involve NF-κB, p38, and IRF-3 and is the key effector in IFN-induced anti-viral responses, apoptosis and protein synthesis.
Anti-Phospho-PKR [pThr451] specifically recognizes PKR phosphorylated on threonine 451 (65-68 kDa). The antibody detects human and mouse PKR [pThr451].

Immunogène

synthetic phosphopeptide derived from the region of PKR that is phosphorylated on threonine 451.

Application

Anti-phospho-PKR (pThr451) antibody may be used for detection by immunoblotting at a working dilution of 1:1,000 using human HeLa cells stimulated with IFN·γ and calyculin. For detection by immunoblotting in human HeLa cells, a working concentration of 0.1-1.0 μg/mL is recommended. Detection of phospho-PKR (pThr451) was done in peritoneal macrophages obtained from thioglycolate-treated mice and human peripheral blood mononuclear cells at a working dilution of 1:500

Forme physique

Supplied as a solution in Dulbecco′s phosphate buffered saline (without Mg2+ and Ca2+), pH 7.3 (+/- 0.1), 50% glycerol, with 1.0 mg/mL BSA (IgG, protease free) as a carrier and 0.05% sodium azide. The amount of the reagent is sufficient for 10 blots.

Clause de non-responsabilité

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


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Antiviral actions of interferons
Samuel CE
Clin. Microbiol. Reviews, 14, 778-809 (2001)
G C Sen
Annual review of microbiology, 55, 255-281 (2001-09-07)
The interferon system is the first line of defense against viral infection in mammals. This system is designed to block the spread of virus infection in the body, sometimes at the expense of accelerating the death of the infected cells.
Cyril X George et al.
Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research, 29(9), 477-487 (2009-09-01)
The protein kinase regulated by RNA (PKR) and the adenosine deaminase acting on RNA (ADAR1) are interferon-inducible enzymes that play important roles in biologic processes including the antiviral actions of interferons, signal transduction, and apoptosis. PKR catalyzes the RNA-dependent phosphorylation
M A García et al.
Microbiology and molecular biology reviews : MMBR, 70(4), 1032-1060 (2006-12-13)
The double-stranded RNA-dependent protein kinase PKR is a critical mediator of the antiproliferative and antiviral effects exerted by interferons. Not only is PKR an effector molecule on the cellular response to double-stranded RNA, but it also integrates signals in response
Ljiljana Pantelic et al.
Journal of virology, 79(3), 1753-1764 (2005-01-15)
A cell model of primary macrophages isolated from the peritoneal cavity of flavivirus-susceptible and congenic resistant mice has been used to study the extent and kinetics of antiviral effects against West Nile virus upon priming with alpha/beta interferon (IFN-alpha/beta) or

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