Rhodopsin,a light-sensitive GPCR whose role in vision is dependent on its phosphorylation status,is influenced in part by the protein arrestin.Which of the following is TRUE with regard to rhodopsin and vision?

Question

Quizplus · Accepted Answer

Arrestin binds to phosphorylated rhodopsin (specifically, the completely phosphorylated form of opsin, which is the protein part of rhodopsin), which serves to inhibit further signaling. This is a crucial step in the deactivation and regulation of the phototransduction cascade, ensuring that the signal from light activation is appropriately terminated.

Rhodopsin,a Light-Sensitive GPCR Whose Role in Vision Is Dependent on Its