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- A hormone signals through a G protein-coupled receptor as shown in the diagram. After the production of IP3, which of these events will MOST quickly stop the transduction of the signal? A. the hydrolysis of IP3 B. the hydrolysis of GTP C. the hydrolysis of PIP2 D. the hydrolysis of the hormoneA hormone signals through a G protein- coupled receptor as shown in the diagram. After the production of IP3, which of these events will MOST quickly stop the transduction of the signal? A. the hydrolysis of IP3 B. the hydrolysis of GTP C. the hydrolysis of PIP2 D. the hydrolysis of the hormoneWhat are the roles of the following signaling molecules in the glucagon pathway: Second messenger Kinase (promoting the pathway) Kinase (inhibiting the pathway)
- Given what we know about epinephrine and glucose 6-phosphate dehydrogenase, would you predict that glucose 6-dehydrogenase is activated, inhibited, or unaffected by epinephrine induced cell signaling? Explain your prediction.Which signaling molecule or molecules bind to a G-protein coupled receptor? (note: there may or may not be more then one answer) a) cortisol b) insulin c) glucagon d) calcium e) cyclic AMP f) epinephrineYou find a monster that produces a hormone that uses standard G-protein receptor pathways to prepare the creature for lunch. Outline two signaling pathways used by the hormone when binding to a receptor, and indicate how you might modify the monsters cells so it doesn’t eat you. (how would you block each of the pathways by blocking production of a component?).
- A hormone signals through a G protein-coupled receptor as shown in the diagram. After the production of IP3, which of these events will MOST quickly stop the transduction of the signal? A. the hydrolysis of IP3 B. the hydrolysis of GTP C. the hydrolysis of PIP2 D. the hydrolysis of the hormone I believe the answer is (B) the hydrolysisof GTP, because the G protein becomes inactive after GTP is hydrolyzed to GDP. However, the solution provided by Bartleby is (C). Please explain. ThanksThis is a signaling pathway that involves a second messenger: epinephrine → G protein-coupled receptor → G protein → adenylyl cyclase → cAMP. Which one is known as the second messenger?in the insulin signaling pathway, the function of the PIP3-dependent Protein Kinase-1 is to add a __ group to the enzyme __ , which activates that enzyme.
- What distinguishes a steroid receptor from a receptor tyrosine kinase receptor or a G-protein-coupled receptor?Why do peptide and steroid hormones bind different kinds of receptor, and how does this difference affect the resulting signaling pathways in the target cell?What kind of protein is the reactor in insulin signaling pathway: a ligand-gated channel, a G protein-linked receptor, or an enzyme- linked receptor? The receptor activates a specific kind of protein, Based on what that protein does, what is it called?