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Key Documents

HPA020240

Sigma-Aldrich

Anti-PPP1R15A antibody produced in rabbit

Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution, Ab1

Synonym(s):

Anti-Growth arrest and DNA damage-inducible protein GADD34, Anti-Myeloid differentiation primary response protein MyD116 homolog, Anti-Protein phosphatase 1 regulatory subunit 15A

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About This Item

UNSPSC Code:
12352203
Human Protein Atlas Number:
HPA020240
NACRES:
NA.41

biological source

rabbit

conjugate

unconjugated

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

product line

Prestige Antibodies® Powered by Atlas Antibodies

form

buffered aqueous glycerol solution

species reactivity

human

technique(s)

immunohistochemistry: 1:20- 1:50

immunogen sequence

QPGEDTEEEEDEDSDTGSAEDEREAETSASTPPASAFLKAWVYRPGEDTEEEEDEDVDSEDKEDDSEAALGEAESDPHPSHPDQRAHFRGWGYRPGKETEEEEAAEDWGEAEPCP

UniProt accession no.

O75807

shipped in

wet ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... PPP1R15A(23645)

General description

Protein phosphatase 1 regulatory subunit 15A (PPP1R15A) is the regulatory subunit of eukaryotic translation initiation factor 2 α (eIF2α) phosphatase. It is expressed when there is a signal indicating endoplasmic reticulum stress.

Immunogen

Protein phosphatase 1 regulatory subunit 15A recombinant protein epitope signature tag (PrEST)

Application

All Prestige Antibodies Powered by Atlas Antibodies are developed and validated by the Human Protein Atlas (HPA) project and as a result, are supported by the most extensive characterization in the industry.

The Human Protein Atlas project can be subdivided into three efforts: Human Tissue Atlas, Cancer Atlas, and Human Cell Atlas. The antibodies that have been generated in support of the Tissue and Cancer Atlas projects have been tested by immunohistochemistry against hundreds of normal and disease tissues and through the recent efforts of the Human Cell Atlas project, many have been characterized by immunofluorescence to map the human proteome not only at the tissue level but now at the subcellular level. These images and the collection of this vast data set can be viewed on the Human Protein Atlas (HPA) site by clicking on the Image Gallery link. We also provide Prestige Antibodies® protocols and other useful information.

Biochem/physiol Actions

Protein phosphatase 1 regulatory subunit 15A (PPP1R15A) recruits the α-subunit of protein phosphatase 1 (PP1) and results in an active eIF2α (eukaryotic translational initiation factor) phosphatase. It functions as an endoplasmic reticulum stress marker. When there is depletion of amino acid levels in the cell, PPP1R15A is expressed in high concentrations. It regulates the mammalian target of rapamycin (mTOR) pathway and thereby boosts autophagy in macrophages. Studies have shown that PPP1R15A is expressed in the oligodendrocytes of patients suffering from Alzheimer′s disease.

Features and Benefits

Prestige Antibodies® are highly characterized and extensively validated antibodies with the added benefit of all available characterization data for each target being accessible via the Human Protein Atlas portal linked just below the product name at the top of this page. The uniqueness and low cross-reactivity of the Prestige Antibodies® to other proteins are due to a thorough selection of antigen regions, affinity purification, and stringent selection. Prestige antigen controls are available for every corresponding Prestige Antibody and can be found in the linkage section.

Every Prestige Antibody is tested in the following ways:
  • IHC tissue array of 44 normal human tissues and 20 of the most common cancer type tissues.
  • Protein array of 364 human recombinant protein fragments.

Linkage

Corresponding Antigen APREST74250

Physical form

Solution in phosphate-buffered saline, pH 7.2, containing 40% glycerol and 0.02% sodium azide

Legal Information

Prestige Antibodies is a registered trademark of Merck KGaA, Darmstadt, Germany

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Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Wei Zhou et al.
The Journal of biological chemistry, 288(46), 33146-33155 (2013-10-05)
In mammalian cells, metabolic and environmental stress increases the phosphorylation of the eukaryotic translational initiation factor, eIF2α, and attenuates global protein synthesis. Subsequent transcriptional activation of GADD34 assembles an eIF2α phosphatase that feeds back to restore mRNA translation. Active proteasomal
Oliver Kepp et al.
Cell cycle (Georgetown, Tex.), 8(23), 3971-3977 (2009-11-11)
In response to some chemotherapeutic agents, tumor cells can translocate calreticulin (CRT), which is usually contained in the lumen of the endoplasmic reticulum, to the surface of the plasma membrane. This effect requires the phosphorylation of the eukaryotic initiation factor

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