title: Turnover of inositol phospholipids and signal transduction.
abstract: Various extracellular informational signals such as those from a group of hormones and some neurotransmitters appear to be passed from the cell surface into the cell interior by two routes, protein kinase C activation and Ca2+ mobilization. Both routes usually become available as the result of an interaction of a single ligand and a receptor and act synergistically to evoke subsequent cellular responses such as release reactions. The signal-dependent breakdown of inositol phospholipids, particularly phosphatidylinositol bisphosphate, now appears to be a key event for initiating these processes.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D002118:Calcium / Q000378:metabolism; D004789:Enzyme Activation; D009419:Nerve Tissue Proteins / Q000378:metabolism; D018377:Neurotransmitter Agents / Q000502:physiology; D010716:Phosphatidylinositols / Q000378:metabolism*; D010750:Phosphoproteins / Q000378:metabolism; D010766:Phosphorylation; D011493:Protein Kinase C; D011494:Protein Kinases / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000502:physiology; D009435:Synaptic Transmission; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D009419:Nerve Tissue Proteins; D018377:Neurotransmitter Agents; D010716:Phosphatidylinositols; D010750:Phosphoproteins; D011956:Receptors, Cell Surface; D011494:Protein Kinases; D011493:Protein Kinase C; D013755:Tetradecanoylphorbol Acetate; D002118:Calcium