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Chem 509 Signal Transduction Winter 2010 Lecture 2
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What difference between Gs, Gq and Gi?: 1.Gs, G protein that is stimulatory and binds AC 2.Gq, G protein that is stimulatory and binds PLC 3.Gi, G protein that is inhibitory and binds AC.
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Phosphatidylinositol Phosphatidylinositol- diphosphate
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Phospholipases Phospholipase A1-can hydrolyse the sn-1 acyl bond but can also hydrolyse the sn-2 acyl bond. In the former case, this liberates a fatty acid and 2-acyl-glycerophospholipid.
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Phospholipases Phospholipase A2-hydrolyses the sn-2 acyl bond. This liberates a fatty acid and a lysophospholipid (1-acyl-glycerophospholipid)
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Phospholipases Phospholipase C-hydrolizes one phosphoester bond to generate diacyglycerol (DAG) and inositol 1,4,5-trisphosphate (IP3).
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Phospholipases Phospholipase D-will hydrolyse the other phosphoester bond to generate phosphatidic acid (amphiphilic product) and inositol 4,5 diphosphate (IP2).
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PI=Phosphatidylinositol, Phosphorylated derivatives of PI are denoted as PIPx. PC=Phosphatidylcholine PA=Phosphatidic acid Lyso PC= deacylated phosphatidylcholine
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Calmodulin
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End of GPCR lecture story
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Insulin signaling
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Other Receptor Tyrosine Kinase Receptors
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Cross talk (part of integration of signals)
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Brief overview of cancer signaling pathways
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Cell cycle
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