6번
발문
다음의 citric acid cycle의 반응들 중 틀린 반응은?
선지
- ① Citrate → Isocitrate
- ② Oxaloacetate + Acetyl-CoA → Citrate
- ③ α-ketoglutarate → Succinyl-CoA
- ④ Succinate → Malate
- ⑤ Malate → Oxaloacetate
관련 내용
해설
정답: ④
- ① Citrate → Isocitrate (aconitase) ✓
- ② OAA + Acetyl-CoA → Citrate (citrate synthase) ✓
- ③ α-ketoglutarate → Succinyl-CoA (α-ketoglutarate dehydrogenase, NADH 생성) ✓
- ④ TCA cycle에서 Succinate → Fumarate (succinate dehydrogenase/Complex II에 의해) → Malate (fumarase에 의해). Succinate가 직접 Malate가 되지 않음 ✗
- ⑤ Malate → OAA (malate dehydrogenase, NADH 생성) ✓