- Catalog number
- PA1680-iFluor647
- Size / count
- 100 µg
- Dry ice
- No
- Hazardous
- No
- Discontinued
- Yes
- Background
- PIK3R2 (Phosphatidylinositol 3-kinase, regulatory subunit 2), also called p85-Beta, is an enzyme that in humans is encoded by the PIK3R2 gene. The PIK3R2 gene is mapped on 19p13.11. Phosphatidylinositol 3-kinase (PI3K) is a lipid kinase that phosphorylates phosphatidylinositol and similar compounds, creating second messengers important in growth signaling pathways. PI3K functions as a heterodimer of a regulatory and a catalytic subunit. The protein encoded by this gene is a regulatory component of PI3K. Two transcript variants, one protein coding and the other non-protein coding, have been found for this gene.
- Synonyms
- 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;
- Gene Name
- Phosphatidylinositol 3-kinase regulatory subunit beta
- UniProt
- O00459
- Host
- Rabbit
- Reactivity
- Human,Mouse,Rat
- Cross Reactivity
- No cross-reactivity with other proteins
- Immunogen
- A synthetic peptide corresponding to a sequence in the middle region of human PIK3R2, identical to the related rat and mouse sequences.
- Clonality
- Polyclonal
- Applications
- IHC,WB
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
- 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. Inly 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). .
- Components
- Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
- References & Citations
- 1. "Entrez Gene: PIK3R2 phosphoinositide-3-kinase, regulatory subunit 2 (p85 beta)".
2. Gout I, Dhand R, Panayotou G, Fry MJ, Hiles I, Otsu M, Waterfield MD (Dec 1992). "Expression and characterization of the p85 subunit of the phosphatidylinositol 3-kinase complex and a related p85 beta protein by using the baculovirus expression system". The Biochemical Journal. 288 ( Pt 2): 395–405.
3. Volinia S, Patracchini P, Otsu M, Hiles I, Gout I, Calzolari E, Bernardi F, Rooke L, Waterfield MD (Apr 1992). "Chromosomal localization of human p85 alpha, a subunit of phosphatidylinositol 3-kinase, and its homologue p85 beta". Oncogene 7 (4): 789–93.
- Storage Conditions
- Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.
- Calculated Molecular Weight
- 81545 MW
- Observed Molecular Weight
- 85 kDa
- Fragment
- Rabbit IgG
- Specificity
- No cross reactivity with other proteins.
- Applications Notes
- Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, Rat, Mouse, By Heat
<br>Western blot, 0.1-0.5μg/ml, Human, Rat, Mouse<br>
- Sequence Similarities
- Belongs to the PI3K p85 subunit family.
- Protein Name
- Phosphatidylinositol 3-kinase regulatory subunit beta(PI3-kinase regulatory subunit beta/PI3K regulatory subunit beta/PtdIns-3-kinase regulatory subunit beta)