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1289622

木虫 (正式写手)

[求助] 表观米氏常数Km的计算方法?

实验操作:
分别将不同浓度的底物B1、B2、B3、B4、B5、B6、B7、B8(mol/L)和适量酶液混匀,在适宜的PH、温度、缓冲液中温孵20min,终止反应,测得反应体系中剩余底物的浓度分别为C1、C2、C3、C4、C5、C6、C7、C8(mol/L),求该酶的Km?

采用双倒数方程:1/v=(Km/Vm)·(1/[S])+1/Vm,1/v对1/[S]作图,根据截距求出Km.

    请问1/v和1/[S]怎么算?
   第一个浓度的反应速度的倒数:1/v=(B1-C1)/20(min),这样算对吗?
  1/[S]是1/B1还是1/C1?


初次接触这方面的问题,请高人指点!!

[ Last edited by 1289622 on 2011-12-31 at 20:52 ]
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LloveG

铁虫 (正式写手)

【答案】应助回帖

采用双倒数方程:1/v=(Km/Vm)·(1/[S])+1/Vm,1/v对1/[S]作图,根据截距求出Km.
2楼2012-01-01 00:15:36
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