Which of the following statements about G proteins is INCORRECT? A) G-proteins link the receptor protein to the signalling pathway of a specific ligand. B) G-proteins produce second messengers to activate adenylyl cyclase to amplify the signal. C) G-protein-linked receptors have seven transmembrane domains and act through G-proteins to alter the activity of an ion channel. D) Intracellular processing of signals may involve G-proteins, leading to a release of Ca²⁺ ions in the cell. E) G-protein-linked receptors have seven transmembrane domains and act through G-proteins to alter the activity of an intracellular enzyme.

Question

Quizplus · Accepted Answer

G-proteins do not produce second messengers themselves; they activate enzymes like adenylyl cyclase, which then produce second messengers such as cAMP.

Which of the Following Statements About G Proteins Is INCORRECT