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AB222791

Recombinant human p23 protein

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Recombinant human p23 protein is a Human Full Length protein, in the 1 to 160 aa range, expressed in Escherichia coli, with >90%, suitable for SDS-PAGE, FuncS.

View Alternative Names

P23, TEBP, PTGES3, Prostaglandin E synthase 3, Cytosolic prostaglandin E2 synthase, Hsp90 co-chaperone, Progesterone receptor complex p23, Telomerase-binding protein p23, cPGES

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SDS-PAGE - Recombinant human p23 protein (AB222791)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant human p23 protein (AB222791)

SDS-PAGE of native human 23kDa p23 protein (ab222791)

Key facts

Purity

>90% SDS-PAGE

Expression system

Escherichia coli

Tags

Tag free

Applications

FuncS, SDS-PAGE

applications

Biologically active

Yes

Biological activity

When ab222791 (4 μM) was added to Aha1-activated HSP90 (2 μM) in 33mM Hepes pH7.2, 30mM NaCl, 5mM MgCl2, 1mM DTT, 1.5mM ATP in a 100 μl reaction at 37°C, it eliminated all Aha1-mediated ATPase stimulation as well as intrinsic HSP90 ATPase activity. (This was an enzyme-linked ATP regeneration assay tracking loss of NADH absorbance at 340nm).

Accession

Q15185

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 7.2 Constituents: 10% Glycerol (glycerin, glycerine), 0.48% HEPES, 0.46% Sodium chloride

storage-buffer

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "FuncS": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"SHMQPASAKWYDRRDYVFIEFCVEDSKDVNVNFEKSKLTFSCLGGSDNFKHLNEIDLFHCIDPNDSKHKRTDRSILCCLRKGESGQSWPRLTKERAKLNWLSVDFNNWKDWEDDSDEDMSNFDRFSEMMNNMGGDEDVDLPEVDGADDDSQDSDDEKMPDLE","proteinLength":"Full Length","predictedMolecularWeight":"18.9 kDa","actualMolecularWeight":null,"aminoAcidEnd":160,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":"Escherichia coli","accessionNumber":"Q15185","tags":[]}]
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Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-20°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
True
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

The p23 protein also known as prostaglandin E synthase 3 weighs about 18 kDa. It functions as a co-chaperone for the heat shock protein 90 (Hsp90) complex. P23 is found in the cytoplasm and nucleus of cells and shows expression across various tissues including the brain liver and kidney. It plays a role in stabilizing the ATP-bound state of Hsp90 assisting in client protein stabilization and maturation. P23 binding to the Hsp90 complex influences its chaperone activity.
Biological function summary

P23 assists Hsp90 in protein-folding processes. As part of the Hsp90 chaperone complex p23 contributes to the correct folding and functioning of several essential client proteins. This chaperone activity is important for cellular processes like signal transduction and protein degradation. Without p23 Hsp90's efficiency in maintaining protein homeostasis can decrease highlighting the importance of their interaction in the cell.

Pathways

The chaperone actions of p23 extensively impact protein signaling pathways and stress response mechanisms. P23 and Hsp90 are important in the Akt/PI3K signaling pathway which regulates cell proliferation and survival. The complex formed by p23 and Hsp90 also involves heat shock proteins like Hsp70 which collaborates in broader cellular stress responses. These connections demonstrate how p23 integrates into cellular regulation and signal transduction networks.

P23's interaction with Hsp90 relates to cancer development and progression. Dysregulation in the p23-Hsp90 interaction can lead to increased stabilization of oncogenic client proteins contributing to tumorigenesis. Additionally p23 implication has been noted in neurodegenerative diseases like Alzheimer's where protein misfolding plays a critical role. Here p23 involvement with proteins like Tau may link its chaperone activity to the pathological protein aggregation seen in such disorders.
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Specifications

Form

Liquid

Additional notes

Affinity purified.

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General info

Function

Cytosolic prostaglandin synthase that catalyzes the oxidoreduction of prostaglandin endoperoxide H2 (PGH2) to prostaglandin E2 (PGE2) (PubMed : 10922363). Molecular chaperone that localizes to genomic response elements in a hormone-dependent manner and disrupts receptor-mediated transcriptional activation, by promoting disassembly of transcriptional regulatory complexes (PubMed : 11274138, PubMed : 12077419). Facilitates HIF alpha proteins hydroxylation via interaction with EGLN1/PHD2, leading to recruit EGLN1/PHD2 to the HSP90 pathway (PubMed : 24711448).

Sequence similarities

Belongs to the p23/wos2 family.

Post-translational modifications

Proteolytically cleaved by caspase-7 (CASP7) in response to apoptosis, leading to its inactivation.

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Product protocols

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Target data

Cytosolic prostaglandin synthase that catalyzes the oxidoreduction of prostaglandin endoperoxide H2 (PGH2) to prostaglandin E2 (PGE2) (PubMed : 10922363). Molecular chaperone that localizes to genomic response elements in a hormone-dependent manner and disrupts receptor-mediated transcriptional activation, by promoting disassembly of transcriptional regulatory complexes (PubMed : 11274138, PubMed : 12077419). Facilitates HIF alpha proteins hydroxylation via interaction with EGLN1/PHD2, leading to recruit EGLN1/PHD2 to the HSP90 pathway (PubMed : 24711448).
See full target information PTGES3
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