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[电场对生物过程动力学的影响]

[Effect of electrical fields on the kinetics of biological processes].

作者信息

Timashev S F

出版信息

Biofizika. 1981 Jul-Aug;26(4):642-6.

PMID:7284452
Abstract

The general problem of the influence of local electrical fields in albuminous systems in vitro on kinetics of chemical transformations and transport of charged particles (electrons, ions) in these systems are considered. Local electrical fields change the activation energy and many stimulate a considerable change of the rate constant values for the process with heterolytic breaks of chemical bonds. Utilization of energy stored in the biological systems for active ion transport is discussed. It is shown in particular that the free energy of ATP hydrolysis may be utilized for initiating redox reactions and stored in the form of inner electrical field energy. This field may stimulate the drift transport of ions and also transport the mean electrical field of the biological membrane

摘要

研究了体外白蛋白系统中局部电场对这些系统中化学转化动力学以及带电粒子(电子、离子)传输的影响这一普遍问题。局部电场会改变活化能,并且许多情况下会极大地改变化学键异裂过程的速率常数值。文中讨论了生物系统中储存的能量用于主动离子运输的情况。特别指出,ATP水解的自由能可用于启动氧化还原反应,并以内部电场能的形式储存起来。该电场可刺激离子的漂移传输,还可传输生物膜的平均电场

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