The enzyme phosphatidylinositol 3 kinase (PI3 kinase) is a lipid kinase that generates phosphatidylinositol 3, 4, 5-triphosphate in response to receptor activation in many signal transduction pathways. Class IA PI3Ks exist as a heterodimer of a catalytic 110 kDa (p110) and a regulatory p85 subunit (e.g. p85 alpha). p85 alpha is an adaptor molecule that regulates the activity of the catalytic p110 subunit by binding to phosphorylated receptor tyrosine kinases (RTKs) through its SH2 domain and mediating the interaction between p110 and the plasma membrane. p85 alpha is necessary for insulin-stimulated increase in glucose uptake and glycogen synthesis in insulin-sensitive tissues.
ab74136 at 1/200 dilution staining PI 3 Kinase p85 alpha + Gamma in mouse embryonic stem cells by Immunocytochemistry/ Immunofluorescence. Cells were fixed in paraformaldehyde, permeabilized in 1:1 methanol, acetone and blocked in 1% serum for 30 minutes at 25°C. The primary antibody was used at 1/100 dilution in Goat block dillution buffer and incubated with sample at 25°C for 1 hours. An Alexa Fluor® 488 conjugated Goat polyclonal to rabbit IgG (H+L) was used as secondary at 1/500 dilution.
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