Which of the following best describes a G protein's intrinsic GTPase activity?
A) G proteins regulate the level of their expression
B) G proteins hydrolyze GTP bound to them to terminate their activity
C) G proteins phosphorylate themselves to induce enzymatic activity
D) G proteins self-assemble and disassemble to regulate enzymatic activity

Question

Quizplus · Accepted Answer

G proteins hydrolyze GTP bound to them to terminate their activity. This intrinsic GTPase activity allows G proteins to cycle between an active, GTP-bound state and an inactive, GDP-bound state, regulating signaling pathways.

Which of the Following Best Describes a G Protein's Intrinsic