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G protein |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson | 0.04 sec. |
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G protein a regulatory protein which becomes activated when bound to GTP and is involved in signal transduction. G protein coupled receptor a member of a large class of cell-surface signaling receptors that contain seven transmembrane a helices; ligand binding results in activation of a coupled trimeric G protein that then initiates intracellular signal transduction pathways. |
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| In a 12-week training study, the elderly subjects who took a supplement composed of 10 g protein, 7 g carbohydrate and 3 g fat immediately after each exercise session achieved an 8% increase in muscle size and a 15% increase in strength, as compared to the control group who took the supplement two hours later--they saw no change in muscle size or strength. Signal Transduction Mediated by Heptahelical Receptors and Heterotrimeric G Proteins |
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G protein
