Respuesta :
The receptor is activated by a signal molecule that binds to it. The binding of GTP and the dissociation of GDP activate the G protein. The G protein separates from the receptor, as seen The G protein causes an effector protein to become active, which causes a biological reaction.
G-protein-coupled plasma membrane receptors are known as G-protein receptors (guanine nucleotide-binding protein). When the signal attaches to the receptor, the receptor alters its conformation, activating the G protein (GDP is changed with GTP). Dissociated G protein subunits can activate effector proteins (enzymes, ion channels, etc.), which triggers a response in the cell. GTP is hydrolyzed to GDP, which deactivates the cascade.
Question: arrange the steps of a G-protein signal transduction in the order that they occur.a. The G protein dissociates from the receptor.b. The G protein activates an effector protein, leading to a cellular response.c. A signal molecule binds to the receptor activating it.d. The G Protein is activated by the dissociation of GDP and binding of GTP.e. The receptor changes conformation and binds an inactive G Protein.
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