問題詳情

74.膽固醇合成的限速酶(rate-limiting enzyme)為下列何者?
(A)HMG-CoA reductase
(B)HMG-CoA isomerase
(C)HMG-CoA synthase
(D)HMG-CoA lyase

參考答案

答案:A
難度:簡單0.611
書單:沒有書單,新增

用户評論

Hua】評論

Lehninger Principles of Biochemistry, p. 817HMG-CoA reductase, an integral membrane protein of the smooth ER, is the major point of regulation on the pathway to cholesterol.膽固醇降低時,HMG-CoA reductase受SREBR-2活化而合成增加膽固醇升高時,phosphorylation促使HMG-CoA reductase蛋白降解

annikalilin】評論

膽固醇合成第一步驟的酶,限速酶(rate-limiting enzyme)Cholesterol synthesis is tightly controlled by regulation at the HMG-CoA reductase step.