| 电极介导的菌紫质干膜微分光电流响应的整流性质 |
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| 引用本文： | 徐兵,韩金多,王敖金,胡坤生.电极介导的菌紫质干膜微分光电流响应的整流性质[J].生物化学与生物物理进展,2013,40(11):1160-1164. |
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| 作者姓名： | 徐兵 韩金多 王敖金 胡坤生 |
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| 作者单位： | 上饶师范学院生命科学系，上饶 334001,上饶师范学院生命科学系，上饶 334001,中国科学院生物物理研究所，北京 100101,中国科学院生物物理研究所，北京 100101 |
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| 摘 要： | 在长方形光脉冲光照下，菌紫质(bacteriorhodopsin，BR)干膜组装成夹层光电池具有微分光电流响应．在氧化铟锡(ITO)导电玻璃/BR膜/封口膜/不锈钢形成的干膜电池下可观察到整流特性，而在不锈钢/BR膜/封口膜/ITO导电玻璃形成的干膜电池下则观察不到整流特性，这说明是电极介导的整流．平衡电压测定表明：工作电极/BR膜表面与对电极/BR膜表面有不同的性质，电极的界面效应控制了BR的取向．酸与碱产生的瞬间电流极性也证实了电极整流行为的存在．这些结果将有助于了解BR膜的微分光电响应．
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| 关 键 词： | 微分光电流，极性，菌紫质膜，电极介导整流，界面效应 |
| 收稿时间： | 2013/6/17 0:00:00 |
| 修稿时间： | 2013/8/20 0:00:00 |
Electrode-mediated Rectification of The Differential Photocurrent Response of Dry Bacteriorhodopsin Film |
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| XU Bing,HAN Jin-Duo,WANG Ao-Jin and HU Kun-Sheng.Electrode-mediated Rectification of The Differential Photocurrent Response of Dry Bacteriorhodopsin Film[J].Progress In Biochemistry and Biophysics,2013,40(11):1160-1164. |
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| Authors: | XU Bing HAN Jin-Duo WANG Ao-Jin and HU Kun-Sheng |
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| Institution: | Department of Life Science, Shangrao Normal University, Shangrao 334001, China,Department of Life Science, Shangrao Normal University, Shangrao 334001, China,Institute of Biophysics, Chinese Academy Sciences, Beijing 100101, China and Institute of Biophysics, Chinese Academy Sciences, Beijing 100101, China |
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| Abstract: | Dry bacteriorhodopsin (BR) film was fabricated into sandwich photocell and has differential photocurrent response to rectangular light pulse. And rectification was observed in the dry photocell of indium-tin oxide/BR film/Parafilm/stainless steel, but not of the steel/BR film/Parafilm/ ITO. This is an evidence of electrode-mediated rectification. Measurement of equilibrium potential suggests that the working electrode/BR film interface have different property from that of its counter electrode/Parafilm/BR film interface. The interfacial effect of the electrodes may dominate over that of the orientation of BR. Polarities of acid or base induced transient current confirmed the presence of rectification behavior of the electrode. The results will help to understand the mechanism of differential response of BR film. |
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| Keywords: | differential photocurrent polarity bacteriorhodopsin film electrode-mediated rectification interfacial effect |
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