What Is the Very FIRST Effect of Ligand Binding to a G

question 4

Multiple Choice

What is the very FIRST effect of ligand binding to a G protein-coupled receptor?

• A)the activation of an effector protein
• B)the release of the alpha subunit of the G protein
• C)a conformational change in the cytoplasmic domain of the receptor
• D)an exchange of GTP in place of GDP on the alpha subunit of the G protein

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