Permeation dynamics of chloride ions in the CIC-0 and CIC-1 channels

被引:7
作者
Corry, B [1 ]
O'Mara, M [1 ]
Chung, SH [1 ]
机构
[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Theoret Phys, Canberra, ACT 0200, Australia
基金
英国医学研究理事会; 澳大利亚研究理事会;
关键词
D O I
10.1016/j.cplett.2004.01.072
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We examine the mechanisms underlying the transport of ions across ClC-0 and ClC-1, the two best characterized members of the ubiquitous ClC chloride channel family. Using molecular and Brownian dynamics techniques we create an open channel structure, deduce the permeation characteristics, and highlight the amino acid residues responsible for the different conductance properties of these channels. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:233 / 238
页数:6
相关论文
共 23 条
[1]  
ALLEN T, 2001, BIOCH BIOPHYS ACTA B, V1515, P3
[2]   Brownian dynamics study of an open-state KcsA potassium channel [J].
Allen, TW ;
Chung, SH .
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES, 2001, 1515 (02) :83-91
[3]  
BENNETTS B, 2001, J PHYSL, V535, P93
[4]   Nonequilibrium gating and voltage dependence of the ClC-0 Cl- channel [J].
Chen, TY ;
Miller, C .
JOURNAL OF GENERAL PHYSIOLOGY, 1996, 108 (04) :237-250
[5]   Study of ionic currents across a model membrane channel using Brownian dynamics [J].
Chung, SH ;
Hoyles, M ;
Allen, T ;
Kuyucak, S .
BIOPHYSICAL JOURNAL, 1998, 75 (02) :793-809
[6]   Mechanisms of permeation and selectivity in calcium channels [J].
Corry, B ;
Allen, TW ;
Kuyucak, S ;
Chung, SH .
BIOPHYSICAL JOURNAL, 2001, 80 (01) :195-214
[7]   X-ray structure of a CIC chloride channel at 3.0 Å reveals the molecular basis of anion selectivity [J].
Dutzler, R ;
Campbell, EB ;
Cadene, M ;
Chait, BT ;
MacKinnon, R .
NATURE, 2002, 415 (6869) :287-294
[8]   Gating the selectivity filter in ClC chloride channels [J].
Dutzler, R ;
Campbell, EB ;
MacKinnon, R .
SCIENCE, 2003, 300 (5616) :108-112
[9]   Conservation of chloride channel structure revealed by an inhibitor binding site in CIC-1 [J].
Estévez, R ;
Schroeder, BC ;
Accardi, A ;
Jentsch, TJ ;
Pusch, M .
NEURON, 2003, 38 (01) :47-59
[10]   A mutation in autosomal dominant myotonia congenita affects pore properties of the muscle chloride channel [J].
Fahlke, C ;
Beck, CL ;
George, AL .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1997, 94 (06) :2729-2734