Dynamical Properties of Potassium Ion Channels with a Hierarchical Model

Chin. Phys. Lett.

2006, Vol. 23

Issue (11): 2906-2908 DOI:

Original Articles

Dynamical Properties of Potassium Ion Channels with a Hierarchical Model

ZHAN Yong;AN Hai-Long;YU Hui;ZHANG Su-Hua;HAN Ying-Rong

School of Sciences, Hebei University of Technology, Tianjin 300130

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ZHAN Yong, AN Hai-Long, YU Hui et al 2006 Chin. Phys. Lett. 23 2906-2908

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Abstract It is well known that potassium ion channels have higher permeability than K ions, and the permeable rate of a single K ion channel is about 10⁸ ions per second. We develop a hierarchical model of potassium ion channel permeation involving ab initio quantum calculations and Brownian dynamics simulations, which can consistently explain a range of channel dynamics. The results show that the average velocity of K ions, the mean permeable time of K ions and the permeable rate of single channel are about 0.92nm/ns, 4.35ns and 2.30× 10⁸ions/s, respectively.

Keywords: 05.10.Gg 31.15.Ew 87.16.Uv

Published: 01 November 2006

PACS:	05.10.Gg	(Stochastic analysis methods)
	31.15.Ew
	87.16.Uv	(Active transport processes)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I11/02906

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