Recent advances in the protein kinase B signaling pathway

Curr Opin Cell Biol. 2005 Apr;17(2):150-7. doi: 10.1016/


The phosphoinositide 3' kinase signaling pathway is activated in response to a plethora of growth factors and cytokines, and initiates a cascade of signaling events primarily via the induction of specific protein-serine/threonine kinases. Interest in the pathway has been driven by its frequent aberrant activation in disease and its impact on cell fate decisions owing to roles in survival signaling and metabolic control. There have been recent advances in our understanding of the primary components of this pathway, namely phosphoinositide-dependent kinase-1, protein kinase B and glycogen synthase kinase-3, including insights into their mechanisms of regulation, substrate proteins and cellular functions.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • 3-Phosphoinositide-Dependent Protein Kinases
  • Animals
  • Binding Sites / physiology
  • Glycogen Synthase Kinase 3 / metabolism
  • Humans
  • Intracellular Signaling Peptides and Proteins / metabolism*
  • Phosphatidylinositol 3-Kinases / metabolism*
  • Phosphorylation
  • Protein Binding / physiology
  • Protein-Serine-Threonine Kinases / metabolism*
  • Proto-Oncogene Proteins / metabolism*
  • Proto-Oncogene Proteins c-akt
  • Signal Transduction / physiology*


  • Intracellular Signaling Peptides and Proteins
  • Proto-Oncogene Proteins
  • Phosphatidylinositol 3-Kinases
  • 3-Phosphoinositide-Dependent Protein Kinases
  • Protein-Serine-Threonine Kinases
  • Proto-Oncogene Proteins c-akt
  • Glycogen Synthase Kinase 3