Then , based on the latest high - resolution , three - dimension crystal structure of kcsa potassium channel , a three - state hopping model is established to study permeation of an open - state potassium channel . breaking through other theories , we innovatively choose the master equation to characterize the dynamics of the system and educe the results according with experiments and the study of the others 其次基于最新的kcsa钾离子通道高分辨率的三维晶体结构，建立了一个三态跳跃模型来研究kcsa钾离子通道的通透性，并且首次应用主方程方法描述它的动力学特征，取得了与实验和他人的研究相吻合的结果。
