title: Phosphatidylinositol 3-phosphates-at the interface between cell signalling and membrane traffic.
abstract: Phosphoinositides (PIs) form a minor class of phospholipids with crucial functions in cell physiology, ranging from cell signalling and motility to a role as signposts of compartmental membrane identity. Phosphatidylinositol 3-phosphates are present at the plasma membrane and within the endolysosomal system, where they serve as key regulators of both cell signalling and of intracellular membrane traffic. Here, we provide an overview of the metabolic pathways that regulate cellular synthesis of PI 3-phosphates at distinct intracellular sites and discuss the mechanisms by which these lipids regulate cell signalling and membrane traffic. Finally, we provide a framework for how PI 3-phosphate metabolism is integrated into the cellular network.
authors.affiliation: Leibniz Institut für Molekulare Pharmakologie (FMP), Berlin, Germany.
authors.forename: Andrea L
authors.initials: AL
authors.lastname: Marat
authors.affiliation: Leibniz Institut für Molekulare Pharmakologie (FMP), Berlin, Germany haucke@fmp-berlin.de.
authors.forename: Volker
authors.initials: V
authors.lastname: Haucke
mesh_terms: D002462:Cell Membrane / Q000378:metabolism*; D002468:Cell Physiological Phenomena; D053263:Gene Regulatory Networks; D007425:Intracellular Membranes / Q000378:metabolism*; D053858:Metabolic Networks and Pathways; D018129:Phosphatidylinositol Phosphates / Q000378:metabolism*; D015398:Signal Transduction
chemical_list: D018129:Phosphatidylinositol Phosphates; C055525:phosphatidylinositol 3-phosphate
keywords: autophagy; endolysosomal system; membrane traffic; phosphatidylinositol 3‐phosphate; signalling