Heterotrimeric G proteins
(I)consist of three subunits,G$\alpha$,G$\beta$,and G$\gamma$.
(II)function as an autoinhibtory segment.
(III)can function as a mediator to adenylate cyclase activity.
(IV)are anchored to the cytoplasmic side of the membrane.

Question

Quizplus · Accepted Answer

Heterotrimeric G proteins consist of three subunits, α, β, and γ, which are anchored to the cytoplasmic side of the membrane. They function as mediators to adenylate cyclase activity and do not act as an autoinhibitory segment. Therefore, only statements I, III, and IV are correct, making choice B the best answer.

Heterotrimeric G Proteins (I)consist of Three Subunits,G α\alphaα ,G β\betaβ ,And G γ\gammaγ

Heterotrimeric G Proteins
(I)consist of Three Subunits,G $\alpha$ ,G $\beta$ ,And G $\gamma$