Anti-phospho-PEK/PERK (pThr981) antibody produced in rabbit

affinity isolated antibody


biological source


Quality Level

antibody form

affinity isolated antibody

antibody product type

primary antibodies




buffered aqueous solution

mol wt

125 kDa

species reactivity



1.0 mg/mL


immunohistochemistry: 1:50-1:100



accession no.


UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... EIF2AK3(9451)

General description

Protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK)/EIF2AK3 (eukaryotic translation initiation factor 2 α kinase 3) is a type I transmembrane protein, located on ER (endoplasmic reticulum). It is a member of the eIF2α kinase subfamily. This gene is located on human chromosome 2p. EIF2AK3 has 16 exons and is made of cytoplasmic and kinase domains.


The antibody detects endogenous levels of PEK/PERK only when phosphorylated at threonine 981.


Peptide sequence around phosphorylation site of threonine 981(A-R-H(p)-T-G) derived from Human PEK/PERK.

Biochem/physiol Actions

Protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK) helps to detect the protein-folding imbalance created by endoplasmic reticulum (ER) stress. EIF2AK3 works as an endoplasmic reticulum (ER) stress sensor to modulate global protein synthesis. Mutation in EIF2AK3 gene results in Wolcott-rallison syndrome.

Features and Benefits

Evaluate our antibodies with complete peace of mind. If the antibody does not perform in your application, we will issue a full credit or replacement antibody. Learn more.

Physical form

Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.


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.


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Monogenic diabetes in children and young adults: Challenges for researcher, clinician and patient.
Slingerland AS.
Reviews in Endocrine & Metabolic Disorders, 7(3), 171-185 (2006)
The ER stress sensor PERK luminal domain functions as a molecular chaperone to interact with misfolded proteins.
Wang P, et al.
Acta crystallographica. Section D, Structural biology, 72(12), 1290-1297 (2016)
A functional haplotype in EIF2AK3, an ER stress sensor, is associated with lower bone mineral density.
Liu J, et al.
Journal of Bone and Mineral Research, 27(2), 331-341 (2012)
Protein kinase R-like ER kinase and its role in endoplasmic reticulum stress-decided cell fate.
Liu Z, et al.
Cell Death & Disease, 6(7), e1822-e1822 (2015)
Wolcott-Rallison Syndrome with Novel EIF2AK3 Gene Mutation.
Gurbuz F, et al.
Journal of Clinical Research in Pediatric Endocrinology, 8(4), 496-496 (2016)

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