Electrostatic interactions and hydrogen bond dynamics in chloride pumping by halorhodopsin.
Electrostatic interactions and hydrogen bond dynamics in chloride pumping by halorhodopsin.
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盐视紫红质泵送氯离子中的静电相互作用和氢键动力学。
DOI:
10.1016/j.bbabio.2014.09.006
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Tobias,DouglasJ
中科院分区:
文献类型:
--
作者:
Jardón-Valadez,Eduardo;Bondar,Ana-Nicoleta;Tobias,DouglasJ
Translocation of negatively charged ions across cell membranes by ion pumps raises the question as to how protein interactions control the location and dynamics of the ion. Here we address this question by performing extensive molecular dynamics simulations of wild type and mutant halorhodopsin, a seven-helical transmembrane protein that translocates chloride ions upon light absorption. We find that inter-helical hydrogen bonds mediated by a key arginine group largely govern the dynamics of the protein and water groups coordinating the chloride ion.
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影响因子:
3.3
作者:
Klauda, Jeffery B.;Venable, Richard M.;Freites, J. Alfredo;O'Connor, Joseph W.;Tobias, Douglas J.;Mondragon-Ramirez, Carlos;Vorobyov, Igor;MacKerell, Alexander D., Jr.;Pastor, Richard W.
通讯作者:
Pastor, Richard W.
影响因子:
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3.4
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影响因子:
3.4
作者:
Aksimentiev, A;Schulten, K
通讯作者:
Schulten, K