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底物浓度如何影响酶活性
更新时间: 2020-10-04 00:00:00  

1、底物浓度对酶的活性不产生影响,只对酶促反应速率产生影响。随着底物浓度增加,酶促反应速率逐渐加快。达到某一值后不再随着浓度的增加而增加。

2、提高酶促反应速率的措施有:增加酶的活性,通过改变温度、PH、激活剂等;增加底物浓度;增加酶量。

后两者不会影响酶活性。但底物的物理状态可影响酶活性。比如将蛋白块切小,可增加和酶接触面积,从而使反应速率加快。

关键词: 浓度 如何 影响 活性

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