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G Protein-Coupled Receptors and G Proteins
1997G protein-coupled receptors (GPCRs) belong to a large class of membrane-spanning receptors. GPCRs function as antennae for external signals consisting of chemical ligands or photons (in the case of opsins). Once the external signal is received, it is transduced to a cytosolic G protein. Subsequently, the G protein itself becomes activated.
Gabriëlle M. Donné-Op den Kelder +2 more
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G-protein-independent signaling by G-protein-coupled receptors
Trends in Neurosciences, 2000Two classes of receptors transduce neurotransmitter signals: ionotropic receptors and heptahelical metabotropic receptors. Whereas the ionotropic receptors are structurally associated with a membrane channel, a mediating mechanism is necessary to functionally link metabotropic receptors with their respective effectors.
Heuss, C, Gerber, U
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New England Journal of Medicine, 1995
The award of the 1994 Nobel Prize in Physiology or Medicine to Alfred G. Gilman and Martin Rodbell for the discovery of G (guanine nucleotide–binding) proteins and their role in cellular signal tra...
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The award of the 1994 Nobel Prize in Physiology or Medicine to Alfred G. Gilman and Martin Rodbell for the discovery of G (guanine nucleotide–binding) proteins and their role in cellular signal tra...
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G-Protein Subunit Dissociation Is not an Integral Part of G-Protein Action
ChemBioChem, 2002AbstractFor Abstract see ChemInform Abstract in Full Text.
Shoshana Klein, Alexander Levitzki
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Nature Reviews Molecular Cell Biology, 2005
The focus of developmental biologists has expanded from the analysis of gene expression to include the analysis of cell signalling. Heterotrimeric G proteins (G proteins) mediate signalling from a superfamily of heptahelical receptors (G-protein-coupled receptors) to a smaller number of effector units that include adenylyl cyclases, phospholipase C and
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The focus of developmental biologists has expanded from the analysis of gene expression to include the analysis of cell signalling. Heterotrimeric G proteins (G proteins) mediate signalling from a superfamily of heptahelical receptors (G-protein-coupled receptors) to a smaller number of effector units that include adenylyl cyclases, phospholipase C and
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G-Proteins and Endothelial Responses
Journal of Vascular Research, 1990G-proteins are transducing proteins that couple a large number of membrane-bound receptors to a variety of intracellular effector systems. Pertussis toxin ADP-ribosylates certain G-proteins causing inhibition of their function. In porcine coronary arteries, pertussis toxin inhibited the endothelium-dependent relaxations evoked by alpha-2-adrenergic or ...
Flavahan, NA, Vanhoutte, PM
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Structural mechanism of G protein activation by G protein-coupled receptor
European Journal of Pharmacology, 2015G protein-coupled receptors (GPCRs) are a family of membrane receptors that regulate physiology and pathology of various organs. Consequently, about 40% of drugs in the market targets GPCRs. Heterotrimeric G proteins are composed of α, β, and γ subunits, and act as the key downstream signaling molecules of GPCRs.
Ka Young Chung +2 more
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A Conformational Trigger for Activation of a G Protein by a G Protein-Coupled Receptor
Biochemistry, 2003G protein-coupled receptors (GPCRs) are a family of seven transmembrane helical proteins that initiate a cellular response to an environmental signal. Once activated by an extracellular signal, GPCRs trigger the intracellular signal transduction cascade by activating a heterotrimeric G protein.
Arlene D. Albert, Philip L. Yeagle
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Inherited Diseases Involving G Proteins and G Protein–Coupled Receptors
Annual Review of Medicine, 2004Heterotrimeric G proteins couple seven-transmembrane receptors for diverse extracellular signals to effectors that generate intracellular signals altering cell function. Mutations in the gene encoding the α subunit of the G protein–coupling receptors to stimulation of adenylyl cyclase cause developmental abnormalities of bone, as well as hormone ...
Lee S. Weinstein, Allen M. Spiegel
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When a G protein-coupled receptor does not couple to a G protein
Molecular BioSystems, 2007Classically, G protein-coupled receptors (GPCRs) relay signals by directly activating heterotrimeric guanine nucleotide-binding proteins (G proteins). Increasing evidence indicates that GPCRs may also signal through G protein-independent pathways. JAK/STATs, Src-family tyrosine kinases, GRKs/beta-arrestins, and PDZ domain-containing proteins have been ...
Yutong Sun +2 more
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