→ AKT*|pho@Cytoplasm References
PDK1 is a PI3K target leading to activation of P70 and subsequent cell growth. Signaling proteins with pleckstrin-homology (PH) domains accumulate at sites of PI3K activation by directly binding to PI(345)P3. Of particular interest are the protein serine-threonine kinases Akt and phosphoinositide-dependent kinase 1 (PDK1). Association with PI(345)P3 at the membrane brings these proteins into proximity and facilitates phosphorylation of Akt by PDK1. This phosphorylation stimulates the catalytic activity of Akt resulting in the phosphorylation of a host of other proteins that affect cell growth cell cycle entry and cell survival.
PMID:12040186