Phosphatidylinositol 3-kinase (PI 3-kinase) is composed of 85 kDa (p85) and 110 kDa (p110) subunits. p85 lacks PI 3-kinase activity and acts as an adapter, coupling p110 to activated protein tyrosine kinase. Two forms of p85 have been described (p85alpha and p85beta), each possessing one SH3 and two SH2 domains. Various p110 isoforms have been identified. p110alpha and p110beta interact with p85alpha, and p110alpha has also been shown to interact with p85beta in vitro. p110delta expression is restricted to white blood cells. It has been shown to bind p85alpha and beta, but it apparently does not phosphorylate these subunits. p110delta seems to have the capacity to autophosphorylate. p110gamma does not interact with the p85 subunits. It has been shown to be activated by alpha and betagamma heterotrimeric G proteins.
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE).
Form:
Rabbit IgG, 1mg/ml in PBS with 0.02% sodium azide, 50% glycerol, pH7.2
Application Dilute:
IHC: 1:50~1:200
Application Notes:
PI 3-kinase p110alpha (R519) polyclonal antibody detects endogenous levels of PI 3-kinase p110alpha protein.
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