The G protein stimulated by light via the Rhodopsin receptor is ____,while the effector is ____.

Question

Quizplus · Accepted Answer

The G protein stimulated by light via the Rhodopsin receptor is Gαt, while the effector is PDE (phosphodiesterase). This results in the breakdown of cGMP and closure of cGMP-gated ion channels, leading to hyperpolarization of the photoreceptor cell. The other answer choices are not correct as Gαi regulates inhibitory pathways, Gαo regulates adenylyl cyclase, and Gαq regulates phospholipase C, not guanylate cyclase.

The G Protein Stimulated by Light Via the Rhodopsin Receptor