Which is an example of a G-protein-coupled receptor that is commonly targeted by medications?

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Multiple Choice

Which is an example of a G-protein-coupled receptor that is commonly targeted by medications?

Explanation:
G-protein-coupled receptors are a major class of drug targets because they translate extracellular signals into intracellular responses through G proteins and second messengers. The beta-adrenergic receptor is a classic example of a GPCR that many medications modulate, such as beta-blockers and beta-agonists, to influence heart rate, blood pressure, and airway tone. The other options are not GPCRs: the nicotinic receptor is a ligand-gated ion channel, the GABA-A receptor is a chloride ion channel, and the NMDA receptor is an ionotropic glutamate receptor. So the beta-adrenergic receptor best fits as a GPCR commonly targeted by medications.

G-protein-coupled receptors are a major class of drug targets because they translate extracellular signals into intracellular responses through G proteins and second messengers. The beta-adrenergic receptor is a classic example of a GPCR that many medications modulate, such as beta-blockers and beta-agonists, to influence heart rate, blood pressure, and airway tone. The other options are not GPCRs: the nicotinic receptor is a ligand-gated ion channel, the GABA-A receptor is a chloride ion channel, and the NMDA receptor is an ionotropic glutamate receptor. So the beta-adrenergic receptor best fits as a GPCR commonly targeted by medications.

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