Citric acid cycle中直接產生GTP之酵素為:
Asuccinate dehydrogenase
Bsuccinate thiokinase正確答案
Cmalate dehydrogenase
Disocitrate dehydrogenase
答案與詳解
succinate thiokinase(=succinyl-CoA synthetase)催化succinyl-CoA→succinate,透過受質層次磷酸化(substrate-level phosphorylation)直接產生GTP,為TCA循環中唯一直接產生高能磷酸鍵的步驟。
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