G-proteins are involved in directly mediating the activity of the following EXCEPT: A) calmodulin. B) adenylyl cyclase. C) phospholipase C-β. D) phospholipase A₂. E) ion channels for K⁺ and other ions.

Question

Quizplus · Accepted Answer

G-proteins directly mediate the activity of adenylyl cyclase, phospholipase C-β, and ion channels, but not calmodulin. Calmodulin is a calcium-binding messenger protein, not directly activated by G-proteins.

G-Proteins Are Involved in Directly Mediating the Activity of the Following