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Key Documents

E0157

Sigma-Aldrich

Anticorpo anti-eIF2α

IgG fraction of antiserum, buffered aqueous solution

Sinonimo/i:

Anti-EIF2, Anti-EIF2S1, Anti-Eukaryotic translation initiation factor 2, Anti-eIF-2A

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About This Item

Codice UNSPSC:
12352203
NACRES:
NA.41

Origine biologica

rabbit

Coniugato

unconjugated

Forma dell’anticorpo

IgG fraction of antiserum

Tipo di anticorpo

primary antibodies

Clone

polyclonal

Forma fisica

buffered aqueous solution

PM

antigen ~35 kDa

Reattività contro le specie

human

tecniche

immunohistochemistry: 1:250 using human cerebral cortex sections
western blot: 1:250-1:500 using PC-12 cell lysate

N° accesso UniProt

Condizioni di spedizione

dry ice

Temperatura di conservazione

−20°C

modifica post-traduzionali bersaglio

unmodified

Informazioni sul gene

human ... EIF2S1(1965)

Descrizione generale

The eukaryotic translation initiation factor 2 subunit α (EIF2A) gene is mapped to human chromosome 14q23.3. The eukaryotic translation initiation factor 2 (eIF2), a multimeric protein is composed of three subunits termed α, β, and γ.

Specificità

Anti-eIF2α (also known as eIF-2A) recognizes human eIF2α.

Applicazioni

Anti-eIF2α antibody produced in rabbit has been used in western blotting.
Anti-elF2α antibody is also suitable for immunohistochemistry at a working dilution of 1:250 using human cerebral cortex sections.
Anti-eIF2α antibody produced in rabbit is suitable for immunoblotting at a working dilution of 1:250-1:500 using PC-12 cell lysate. It was used as a primary antibody to detect eIF2α in a study.

Azioni biochim/fisiol

Increased eIF2α phosphorylation has been observed in Alzheimer′s disease. Viral infections are also known to induce eIF2α phosphorylation.
The main role of eIF2 complex is to transfer Met-tRNAi in the presence of GTP to the 40S ribosomal subunit during the initiation of translation. Regulation of the initiation of translation at the level of eIF2 involves the phosphorylation of eIF2α at a conserved Ser51 residue. This leads to inhibition of eIF2β activity, thus reducing guanine nucleotide exchange and consequently, the translation rate. Protein synthesis inhibition at the level of eIF2α phosphorylation is linked to a variety of cell stress signaling pathways via specific kinases. Phosphorylation of eIF2α reduces the rate of translation and gives the cell time to correct the stress damage, and selectively enhance the translation of genes important for stress remedy.

Stato fisico

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.

Stoccaggio e stabilità

For continuous use, store at 2–8 °C for up to one month. For extended storage, freeze in working aliquots. Repeated freezing and thawing, or storage in “frost-free” freezers, is not recommended. If slight turbidity occurs upon prolonged storage, clarify the solution by centrifugation before use. Working dilutions should be discarded if not used within 12 hours.

Esclusione di responsabilità

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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Codice della classe di stoccaggio

10 - Combustible liquids

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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R C Wek et al.
Biochemical Society transactions, 34(Pt 1), 7-11 (2005-10-26)
In response to environmental stresses, a family of protein kinases phosphorylate eIF2 (eukaryotic initiation factor 2) to alleviate cellular injury or alternatively induce apoptosis. Phosphorylation of eIF2 reduces global translation, allowing cells to conserve resources and to initiate a reconfiguration
R C Wek
Trends in biochemical sciences, 19(11), 491-496 (1994-11-01)
Phosphorylation of eukaryotic initiation factor-2 (eIF-2) is an important mechanism regulating general translation initiation. Two mammalian eIF-2 kinases, the double-stranded-RNA-dependent kinase (PKR) and heme-regulated inhibitor kinase (HRI), have been characterized by sequencing, revealing shared sequence and structural features distinct from
Christopher G Proud
Seminars in cell & developmental biology, 16(1), 3-12 (2005-01-22)
Eukaryotic initiation factor eIF2 and its 'exchange factor' eIF2B play a key role in the regulation of protein synthesis in eukaryotes from yeast to mammals. Phosphorylation of eIF2 inhibits eIF2B and thus translation initiation. Four eIF2 kinases are now known
Rita Spilka et al.
Cancer letters, 340(1), 9-21 (2013-07-09)
Eukaryotic gene expression is a complicated process primarily regulated at the levels of gene transcription and mRNA translation. The latter involves four main steps: initiation, elongation, termination and recycling. Translation regulation is primarily achieved during initiation which is orchestrated by
Anton A Komar et al.
International journal of molecular sciences, 21(6) (2020-03-21)
Initiation of protein synthesis in eukaryotes is a complex process requiring more than 12 different initiation factors, comprising over 30 polypeptide chains. The functions of many of these factors have been established in great detail; however, the precise role of

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