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AB125568

Recombinant Human PI 3 Kinase p85 beta protein

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Recombinant Human PI 3 Kinase p85 beta protein is a Human Full Length protein, in the 1 to 728 aa range, expressed in Baculovirus infected Sf9 cells, with >85%, suitable for SDS-PAGE, WB.

View Alternative Names

Phosphatidylinositol 3-kinase regulatory subunit beta, PI3-kinase regulatory subunit beta, PI3K regulatory subunit beta, PtdIns-3-kinase regulatory subunit beta, Phosphatidylinositol 3-kinase 85 kDa regulatory subunit beta, PI3-kinase subunit p85-beta, PtdIns-3-kinase regulatory subunit p85-beta, PIK3R2

1 Images
SDS-PAGE - Recombinant Human PI 3 Kinase p85 beta protein (AB125568)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human PI 3 Kinase p85 beta protein (AB125568)

SDS-PAGE analysis of ab125568.

Key facts

Purity

>85% Densitometry

Expression system

Baculovirus infected Sf9 cells

Tags

His tag N-Terminus

Applications

WB, SDS-PAGE

applications

Biologically active

No

Accession

O00459

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 7 Preservative: 1.02% Imidazole Constituents: 25% Glycerol (glycerin, glycerine), 1.75% Sodium chloride, 0.81% Sodium phosphate, 0.004% (R*,R*)-1,4-Dimercaptobutan-2,3-diol, 0.002% PMSF

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>" }, "WB": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"","proteinLength":"Full Length","predictedMolecularWeight":"88 kDa","actualMolecularWeight":null,"aminoAcidEnd":728,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":null,"accessionNumber":"O00459","tags":[{"tag":"His","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False
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Supplementary information

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

PI 3-kinase p85 beta also known as PIK3R2 is a regulatory subunit of phosphoinositide 3-kinases (PI3K). This protein has a molecular weight of approximately 85 kilodaltons. It expresses widely in various tissues including brain liver and skeletal muscle. The p85 protein form interacts with the catalytic subunit p110 allowing for the proper localization and activation of PI3K in response to various extracellular signals.
Biological function summary

The regulatory subunit PI 3-kinase p85 beta is responsible for maintaining the balance of PI3K activity within the cellular environment. It forms a dynamic complex with the catalytic subunit influencing downstream signaling pathways. The presence of p85 beta ensures the stability and function of the PI3K complex essential for processes such as cell growth survival and metabolism.

Pathways

This protein plays a significant role in the PI3K/AKT/mTOR signaling pathway and also contributes to insulin signaling. It partners with p110 and mediates the transmission of signals from receptor tyrosine kinases (RTKs) like insulin receptors. The regulation by p85 beta affects protein synthesis and glucose uptake highlighting its function in cellular energy management.

Dysregulation of PI 3-kinase p85 beta associates frequently with types of cancer and type 2 diabetes mellitus. Aberrant signaling through the PI3K pathway involving interactions between p85 beta and p110 contributes to oncogenesis. Similarly inappropriate regulation of insulin signaling links p85 beta with insulin resistance an important factor in type 2 diabetes where it may interact with proteins such as IRS-1 (Insulin Receptor Substrate 1) to influence disease progression.
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Specifications

Form

Liquid

Additional notes

Purity was determined to be >85% by densitometry.

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General info

Function

Regulatory subunit of phosphoinositide-3-kinase (PI3K), a kinase that phosphorylates PtdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Binds to activated (phosphorylated) protein-tyrosine kinases, through its SH2 domain, and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. Indirectly regulates autophagy (PubMed : 23604317). Promotes nuclear translocation of XBP1 isoform 2 in a ER stress- and/or insulin-dependent manner during metabolic overloading in the liver and hence plays a role in glucose tolerance improvement (By similarity).

Sequence similarities

Belongs to the PI3K p85 subunit family.

Post-translational modifications

Phosphorylated in response to signaling from activated receptor-type protein kinases (PubMed:19690332, PubMed:20068231). Dephosphorylated by PTPRJ (PubMed:18348712). Dephosphorylated at Tyr-655 by PTPN13. Phosphorylation of Tyr-655 impairs while its dephosphorylation promotes interaction with FBXL2 and SCF(FBXL2)-mediated polyubiquitination (PubMed:23604317).. Ubiquitinated. Polyubiquitination by the SCF(FBXL2) complex probably promotes proteasomal degradation of PIK3R2.

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Product protocols

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Target data

Regulatory subunit of phosphoinositide-3-kinase (PI3K), a kinase that phosphorylates PtdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Binds to activated (phosphorylated) protein-tyrosine kinases, through its SH2 domain, and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. Indirectly regulates autophagy (PubMed : 23604317). Promotes nuclear translocation of XBP1 isoform 2 in a ER stress- and/or insulin-dependent manner during metabolic overloading in the liver and hence plays a role in glucose tolerance improvement (By similarity).
See full target information PIK3R2
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Complementary Products

Primary Antibodies

AB138364

Anti-PI 3 Kinase p85 beta (phospho Y464) antibody

Western blot - Anti-PI 3 Kinase p85 beta (phospho Y464) antibody (AB138364)

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Primary Antibodies

AB302958

Anti-PI 3 Kinase catalytic subunit gamma/PI3K-gamma antibody [EPR25156-60]

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Immunohistochemistry - Anti-PI 3 Kinase catalytic subunit gamma/PI3K-gamma antibody [EPR25156-60] (AB302958)

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Primary Antibodies

AB191606

Anti-PI 3 Kinase p85 alpha antibody [EPR18702]

20ul selling size|RabMAb|Recombinant|KO Validated

Immunocytochemistry/ Immunofluorescence - Anti-PI 3 Kinase p85 alpha antibody [EPR18702] (AB191606)

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Primary Antibodies

AB278545

Anti- PI 3 Kinase p85 alpha (phospho Y467) + PI3 Kinase p55 (phospho Y199) antibody [PI3KY458-1A11]

20ul selling size|Recombinant

Flow Cytometry - Anti- PI 3 Kinase p85 alpha (phospho Y467) + PI3 Kinase p55 (phospho Y199) antibody [PI3KY458-1A11] (AB278545)

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