Akt activation is governed by a dual regulatory mechanism in which it is first recruited to the cellular plasma membrane by PIP3 through a direct interaction with the PH domain of Akt. … Activated form of Akt can modulate the functions of many substrates responsible for cell-cycle progression.

How is the Akt pathway activated?

Akt is activated downstream of vascular endothelial growth factor (VEGF) in endothelial cells in the lining of blood vessels, promoting survival and growth. Akt also contributes to angiogenesis by activating endothelial nitric oxide synthase (eNOS), which increases production of nitric oxide (NO).

How does PIP3 activate Akt?

PIP3 recruits AKT to the plasma membrane, allowing TORC2 to phosphorylate a conserved serine residue of AKT. Phosphorylation of this serine induces a conformation change in AKT, exposing a conserved threonine residue that is then phosphorylated by PDPK1 (PDK1).