Which of the three subunits of the G proteins binds GDP and GTP?

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Which of the three subunits of the G proteins binds GDP and GTP? Answer: Alpha

Question context

This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.