title: The Sec14 superfamily and mechanisms for crosstalk between lipid metabolism and lipid signaling.
abstract: Lipid signaling pathways define central mechanisms for cellular regulation. Productive lipid signaling requires an orchestrated coupling between lipid metabolism, lipid organization and the action of protein machines that execute appropriate downstream reactions. Using membrane trafficking control as primary context, we explore the idea that the Sec14-protein superfamily defines a set of modules engineered for the sensing of specific aspects of lipid metabolism and subsequent transduction of 'sensing' information to a phosphoinositide-driven 'execution phase'. In this manner, the Sec14 superfamily connects diverse territories of the lipid metabolome with phosphoinositide signaling in a productive 'crosstalk' between these two systems. Mechanisms of crosstalk, by which non-enzymatic proteins integrate metabolic cues with the action of interfacial enzymes, represent unappreciated regulatory themes in lipid signaling.
authors.affiliation: Department of Cell & Developmental Biology, Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill. Chapel Hill, North Carolina 27599-7090, USA.
authors.forename: Vytas A
authors.initials: VA
authors.lastname: Bankaitis
authors.forename: Carl J
authors.initials: CJ
authors.lastname: Mousley
authors.forename: Gabriel
authors.initials: G
authors.lastname: Schaaf
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000737:chemistry / Q000378:metabolism; D050356:Lipid Metabolism / Q000502:physiology*; D008958:Models, Molecular; D018129:Phosphatidylinositol Phosphates / Q000378:metabolism; D010716:Phosphatidylinositols / Q000378:metabolism; D049294:Phospholipid Transfer Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D017853:Phosphotransferases (Alcohol Group Acceptor) / Q000378:metabolism; D017434:Protein Structure, Tertiary; D029701:Saccharomyces cerevisiae Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D015398:Signal Transduction / Q000502:physiology*
chemical_list: D018129:Phosphatidylinositol Phosphates; D010716:Phosphatidylinositols; D049294:Phospholipid Transfer Proteins; C483438:SEC14 protein, S cerevisiae; D029701:Saccharomyces cerevisiae Proteins; D017853:Phosphotransferases (Alcohol Group Acceptor)