General description
PI3K (p110alpha/p55gamma) or Phosphatidylinositol 3-kinase is a lipid kinase that phosphorylates the inositol ring of phosphatidylinositol at the 3-prime position which serve as second messengers in growth signaling pathways. PI3K comprises a 110 kD catalytic subunit and a regulatory subunit of either 85, 55, or 50 kD. Phosphatidylinositol 3-kinase plays an important role in the metabolic actions of insulin, and a mutation in the PI3K has been associated with insulin resistance and plays an important role in glucose homeostasis in vivo. PI3K also plays an essential role in the development and induction of mast cells in normal and pathogenic immune responses.
Physical form
Supplied in 50 mM sodium phosphate, pH 7.0, 300 mM NaCl, 150 mM imidazole, 0.1 mM PMSF, 0.2 mM DTT, 25% glycerol.
Preparation Note
After opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles.
Legal Information
PRECISIO is a registered trademark of Merck KGaA, Darmstadt, Germany
| recombinant | expressed in baculovirus infected Sf9 cells |
| product line | PRECISIO® |
| assay | ≥70% (SDS-PAGE) |
| form | buffered aqueous glycerol solution |
| specific activity | 11.2-16.8 nmol/min·mg |
| mol wt | ~111 kDa (p110α), ~61 kDa (p85γ) |
| NCBI accession no. | NM_006218 |
| shipped in | dry ice |
| storage temp. | −70°C |
| Gene Information | human ... PIK3CA(5290) |
