【摘要】目的：分析研究纳米通道电化学单分子分析检测酶分子的应用价值。方法：通过利用溶血素以及卵磷脂的自由组装形成生物纳米孔到，通过溶血素孔径的特性来控制单链DNA以及双链DNA通过孔径的时候不同电流下降，对凝血酶与是凝血酶试题的亲和作用给予分析研究。结果：因为颈环结构属于双链结构无法穿过溶血素纳米孔道卡在溶血素孔道当中，造成电流信号终止。结论：颈环结构可以在高电压下被伸展开，可以顺利通过纳米通道。另外，颈环结构DNA解链时间和双链序列没有关系，和施加电压有密切关系。凝血酶作用以后的dsDNA可以顺利通过溶血素纳米孔道能够看见凝血酶，与凝血酶适体有非常高的亲和力，可以将凝血酶适体从dsDNA当中脱离开。

    【关键词】纳米通道；电化学单分子；酶分子

    Abstract：Objective： To study the application value of the detection of the enzyme molecules by the electrochemical single molecule analysis of the nano channel. Methods： Analyze the affinity interaction between thrombin and thrombin reagent by using hemolysin and lecithin free assembly to biological nanopores through the characteristics of hemolysin aperture to control single stranded DNA and double stranded DNA. Results： The current signal was terminated because the double stranded structure which made up with cervical loop structure could not pass through the hemolysin nanopore. In addition ......