hce_kmu
107年
普通生物及生化概論
第 50 題
How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
- A by binding to the active site of the enzyme, thus preventing binding of the normal substrate
- B by binding to an allosteric site, thus changing the shape of the active site of the enzyme
- C by decreasing the free-energy change of the reaction catalyzed by the enzyme
- D by acting as a coenzyme for the reaction
- E by binding to the substrate, thus changing its shape so that it no longer binds to the active site of the enzyme
思路引導 VIP
若我們把酵素想像成一把鎖，而受質是唯一能開鎖的鑰匙。除了直接把東西塞進鑰匙孔（活性位）讓鑰匙插不進去外，還有什麼方法可以讓這把鎖「從內部結構發生變形」，使得原本的鑰匙就算插進去了，也依然轉不動呢？