Following its initial activation, how does a G protein become inactivated?

A. The G-protein, a subunit, is digested and recycled.
B. It spontaneously loses activity within a few seconds.
C. The G-protein, a subunit containing a GTP, eventually reassociates with the G-protein bg dimer.
D. The G-protein, a subunit GTP, is hydrolyzed to GDP allowing reassociation of the G-protein a subunit and ?? dimer.
E. The receptor becomes internalized.


Answer: D

Biology & Microbiology

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