試題詳解

30. GTP is preferentially used over ATP during protein synthesis (translation) at several key steps. Which of the following factors best explains this preference?
(A) GTP hydrolysis releases more energy per phosphate bond than ATP hydrolysis, making it more suitable for the energy-intensive process of translation.
(B) GTP is more readily available in the ribosome environment than ATP, due to its higher concentration in the cytoplasm.
(C) GTP has a unique chemical structure that allows it to form stronger interactions with ribosomal RNA (rRNA) than ATP.
(D) The use of GTP in translation prevents interference with other cellular processes that rely on ATP as their primary energy source.
(E) GTP hydrolysis is coupled with conformational changes in translation factors and the ribosome, providing precise timing and control of the translation process.