一种改进型单分子操纵装置及其应用

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改进了单分子横向磁镊装置,可以直接用于观察单个DNA分子的伸长和扭转并随时更换样品池内的溶液,还可以同时操纵多个DNA分子,大大提高实验效率.此方法可以提供0.1到40pN范围的拉力,足以满足大部分单分子DNA实验的要求.用该装置实时观测到了DNA分子在拉力作用下的伸长以及在旋转磁场作用下的扭转,并成功地观察到了分子马达拉动DNA的动力学过程,从而验证了该装置的实用性.
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