PIK3R2 Antibody

Code CSB-PA003770
Size US$167
  • Western Blot analysis of 453 cells using PI 3-kinase p85β Polyclonal Antibody
  • Western Blot analysis of 293T AD293 HELA HepG2 cells using PI 3-kinase p85β Polyclonal Antibody
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Product Details

Uniprot No. O00459
Target Names PIK3R2
Alternative Names p85 antibody; p85 beta antibody; P85B antibody; P85B_HUMAN antibody; Phosphatidylinositol 3 kinase antibody; Phosphatidylinositol 3 kinase regulatory beta subunit antibody; Phosphatidylinositol 3 kinase regulatory subunit beta antibody; Phosphatidylinositol 3 kinase regulatory subunit polypeptide 2 antibody; Phosphatidylinositol 3 kinase; regulatory subunit; polypeptide 2 (p85 beta) antibody; Phosphatidylinositol 3-kinase 85 kDa regulatory subunit beta antibody; Phosphatidylinositol 3-kinase regulatory subunit beta antibody; Phosphoinositide 3 kinase regulatory subunit 2 (beta) antibody; Phosphoinositide 3 kinase regulatory subunit 2 antibody; Phosphoinositide 3 kinase regulatory subunit polypeptide 2 (p85 beta) antibody; Phosphoinositide 3 kinase regulatory subunit polypeptide 2 antibody; Phosphoinositide 3 kinase; regulatory subunit 2 (beta) antibody; Phosphoinositide 3 kinase; regulatory subunit 2 (p85 beta) antibody; PI3 kinase p85 beta subunit antibody; PI3 kinase p85 subunit beta antibody; PI3-kinase regulatory subunit beta antibody; PI3-kinase subunit p85-beta antibody; PI3K antibody; PI3K regulatory subunit beta antibody; PIK3R 2 antibody; PIK3R2 antibody; PtdIns 3 kinase p85 beta antibody; PtdIns-3-kinase regulatory subunit beta antibody; PtdIns-3-kinase regulatory subunit p85-beta antibody
Raised in Rabbit
Species Reactivity Human,Mouse,Rat
Immunogen Synthesized peptide derived from Human PI 3-kinase p85β around the non-phosphorylation site of Y464.
Immunogen Species Homo sapiens (Human)
Conjugate Non-conjugated
Isotype IgG
Purification Method The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Concentration It differs from different batches. Please contact us to confirm it.
Buffer Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Form Liquid
Tested Applications WB, ELISA
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:2000
ELISA 1:10000
Protocols Western Blotting(WB) Protocol
ELISA Protocol
Troubleshooting and FAQs Antibody FAQs
Storage Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

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. 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.
Gene References into Functions
  1. Data indicate that miR-126 overexpression in RASFs inhibits PIK3R2 expression and promotes proliferation while inhibiting apoptosis. PMID: 27729613
  2. this study shows that targeted depletion of PIK3R2 induces regression of lung squamous cell carcinoma PMID: 27835880
  3. Data show that phosphoinositol-3 kinase regulatory subunit 2 (PIK3R2) mRNA is a direct target of miR-126-3p. PMID: 27191494
  4. Data indicate that miR-126 expression negatively correlates with p85beta in CLL patients and that miR-126 can effectively target p85beta in a cell-line system. PMID: 28299881
  5. Mosaic mutations in PIK3CA or PIK3R2 which activate class 1A PI3K cause severe non-ketotic hypoglycaemia in a subset of patients, with the metabolic phenotype presumably related to the extent of mosaicism within the liver PMID: 28566443
  6. PIK3R2 D557H mutation causes polymicrogyria, corpus callosum hyperplasia and focal cortical dysplasia. PMID: 26860062
  7. miR-3151 silencing by DNA methylation protected chronic lymphocytic leukemia cells from apoptosis by over-expression of its direct targets MADD and PIK3R2, constitutive activation of MEK/ERK and PI3K/AKT signaling , and over-expression of MCL1. PMID: 26517243
  8. pik3r2 was confirmed to be a direct target of miR126 in prostate cancer. PMID: 26677064
  9. indicated that miR-126 expression was negatively correlated with PIK3R2 mRNA expression PMID: 26723864
  10. The miR-126 was found to act as proliferation suppressor targeting PIK3R2 gene and reducing p85beta (a regulatory subunit of PI3K kinase) protein translation and lower AKT kinase activity. PMID: 26384552
  11. Constitutional and mosaic mutations in the PIK3R2 gene are associated with developmental brain disorders ranging from Bilateral perisylvian polymicrogyria with a normal head size to the megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome. PMID: 26520804
  12. The authors show that this potentiation involves reorganization of the natural CrkL-p85beta complex into a novel trimeric complex where influenza A virus NS1 serves as a bridging factor. PMID: 26099693
  13. the metastasis and angiogenesis functions of miR-126-3p were mediated by LRP6 and PIK3R2. PMID: 25240815
  14. Study indicates that miR-126 is a tumor suppressor that inhibits gastric cancer cells proliferation by targeting PI3KR2, Crk and PLK2. PMID: 24969300
  15. FBXL2 mediates the ubiquitylation and degradation of p85beta on cell membranes. PMID: 23604317
  16. miR-126-mediated phosphoinositide-3-kinase regulation, not only fine-tunes VEGF-signaling, but it strongly enhances the activities of Ang-1 on vessel stabilization and maturation. PMID: 22867989
  17. p85beta phosphoinositide 3-kinase subunit regulates tumor progression PMID: 22733740
  18. recombinant production, crystallization and X-ray structure determination at 2.0 A resolution of the SH3 domain of human p85beta is described PMID: 22102226
  19. miR-126 could target both VEGFA and PIK3R2, and its expression was decreased in human breast cancer, implying that miR-126 may play a role in tumor genesis and growth by regulating the VEGF/PI3K/AKT signaling pathway PMID: 21249429
  20. The crystal structure of human p85beta iSH2 determined to 3.3A resolution is reported. PMID: 21139197
  21. Macropinocytosis is regulated by interactions between Abi1 pY213 and the C-terminal SH2 domain of p85-thereby linking Abl kinase signaling to p85-dependent regulation of macropinocytosis. PMID: 20598684
  22. Overexpression of SH3 domain of p85beta inhibits influenza A virus replication. PMID: 20653952
  23. the PTEN phosphatase is active against the PI3K p85beta subunit and dephosphorylates a protein involved in insulin signaling where known downstream consequences are increased cell migration, motility, and invasion. PMID: 20515662
  24. oncogenic p85 mutations lead to a loss of a C2-iSH2 domain contact that is required for inhibition of p110alpha by p85. PMID: 19915146
  25. NS5A mediates activation of beta-catenin in a phosphoinositide-3 kinase-dependent fashion. PMID: 19846673
  26. Mutant viruses carrying NS1 with mutations in SH3 binding motif 1 failed to interact with p85ss and induce the subsequent activation of PI3K/Akt pathway. PMID: 17881440
  27. in VSMCs exposed to hyperglycemia, IGF-I stimulation of Shc facilitates the transfer of Grb2 to p85 resulting in enhanced PI3K activation and AKT phosphorylation leading to enhanced cell proliferation and migration PMID: 18420583

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Involvement in disease Megalencephaly-polymicrogyria-polydactyly-hydrocephalus syndrome 1 (MPPH1)
Protein Families PI3K p85 subunit family
Database Links

HGNC: 8980

OMIM: 603157

KEGG: hsa:5296

STRING: 9606.ENSP00000471914

UniGene: Hs.371344

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