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Key Documents

HPA018884

Sigma-Aldrich

Anti-P4HB antibody produced in rabbit

enhanced validation

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

Synonym(s):

Anti-Cellular thyroid hormone-binding protein, Anti-PDI, Anti-Prolyl 4-hydroxylase subunit beta, Anti-Protein disulfide-isomerase, Anti-p55

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About This Item

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

biological source

rabbit

Quality Level

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

mouse, human, rat

enhanced validation

orthogonal RNAseq
Learn more about Antibody Enhanced Validation

technique(s)

immunoblotting: 0.04-0.4 μg/mL
immunofluorescence: 0.25-2 μg/mL
immunohistochemistry: 1:500-1:1000

immunogen sequence

LPLVIEFTEQTAPKIFGGEIKTHILLFLPKSVSDYDGKLSNFKTAAESFKGKILFIFIDSDHTDNQRILEFFGLKKEECPAVRLITLEEEMTKYKPESEELTAERITEFCHRFLEGKIKPHLMSQELPEDWDKQPVKVLVGKNF

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... P4HB(5034)

General description

The gene prolyl 4-hydroxylase subunit β (P4HB) is mapped to human chromosome 17q25. It belongs to the family of soluble oxidoreductases. The protein is present at the cell surface of B cells, platelets, pancreatic cells and hepatocytes. The protein localizes in the endoplasmic reticulum and at the cell surface. P4HB is also called as PDI (protein disulfide isomerase).

Immunogen

Protein disulfide-isomerase Precursor 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

Prolyl 4-hydroxylase subunit β (P4HB) is involved in the formation of disulfide bonds. In addition, it binds polypeptide chains and work as a chaperone, thereby helping in folding of polypeptides. It also works as a subunit of prolyl 4-hydroxylase (P4H). Impairment in disulfide isomerase activity of P4HB is associated with Cole-Carpenter syndrome. Single nucleotide polymorphism in P4HB is associated with amyotrophic lateral sclerosis. P4HB is up-regulated in presence of hypoxia in astrocytes. It works together with ubiquilin in protecting neurons against apoptosis.

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 APREST84449

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

Disclaimer

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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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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Chun Tak Kwok et al.
Free radical biology & medicine, 58, 81-86 (2013-01-23)
Protein disulfide isomerase (PDI) plays an important role in the endoplasmic reticulum (ER) by facilitating the exchange of disulfide bonds and, together with other ER stress proteins, is induced in amyotrophic lateral sclerosis (ALS). However, genetic polymorphisms in the P4HB
T Voss et al.
International journal of cancer, 91(2), 180-186 (2001-01-09)
The development of human cancer is caused by complex molecular perturbations leading to variable clinical behavior often even in single disease entities. To prove that expression profiling on the protein level can be correlated with clinical data we systematically compared
Joanna Niedbalska-Tarnowska et al.
Pediatric nephrology (Berlin, Germany), 39(8), 2363-2375 (2024-03-23)
Autosomal dominant tubulointerstitial kidney disease (ADTKD) results from mutations in various genes, including REN, UMOD, MUC1, and HNF1B. ADTKD due to REN mutations (ADTKD-REN) is often characterized as a proteinopathy that triggers the endoplasmic reticulum stress (ERS) cascade, potentially sharing
Han Seok Ko et al.
The Journal of biological chemistry, 277(38), 35386-35392 (2002-07-04)
Up-regulation of several stress proteins such as heat-shock proteins and glucose-regulated proteins participate in tolerance against environmental stress. Previously, we found that protein-disulfide isomerase (PDI) is specifically up-regulated in response to hypoxia/brain ischemia in astrocytes. In addition, the overexpression of
Vanda Tukacs et al.
Molecular neurobiology, 60(6), 3158-3174 (2023-02-23)
Declining cerebral blood flow leads to chronic cerebral hypoperfusion which can induce neurodegenerative disorders, such as vascular dementia. The reduced energy supply of the brain impairs mitochondrial functions that could trigger further damaging cellular processes. We carried out stepwise bilateral

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