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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Phosphate mediated adsorption and electron transfer of cytochrome c. A time-resolved SERR spectroelectrochemical study
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Phosphate mediated adsorption and electron transfer of cytochrome c. A time-resolved SERR spectroelectrochemical study

机译：磷酸介导的细胞色素c的吸附和电子转移。时间分辨SERR光谱电化学研究

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摘要

The study of proteins immobilized on biomimetic or biocompatible electrodes represents an active field of research as it pursues both fundamental and technological interests. In this context, adsorption and redox properties of cytochrome c (Cyt) on different electrode surfaces have been extensively reported, although in some cases with contradictory results. Here we report a SERR spectroelectrochemical study of the adsorption and electron transfer behaviour of the basic protein Cyt on electrodes coated with amino-terminated monolayers. The obtained results show that inorganic phosphate (Pi) and ATP anions are able to mediate high affinity binding of the protein with preservation of the native structure and rendering an average orientation that guarantees efficient pathways for direct electron transfer. These findings aid the design of Cyt-based bioelectronic devices and understanding the modulation by Pi and ATP of physiological functions of Cyt.
机译：固定在仿生或生物相容性电极上的蛋白质的研究代表了基础和技术利益，是一个活跃的研究领域。在这种情况下，虽然在某些情况下得出相反的结果，但已经广泛报道了细胞色素c（Cyt）在不同电极表面上的吸附和氧化还原特性。在这里，我们报告了SERR光谱电化学研究碱性蛋白Cyt在涂有氨基末端单层的电极上的吸附和电子转移行为。获得的结果表明，无机磷酸根（Pi）和ATP阴离子能够介导蛋白质的高亲和力结合，并保留天然结构并提供平均方向，从而确保直接电子转移的有效途径。这些发现有助于基于Cyt的生物电子设备的设计，并了解Pi和ATP对Cyt生理功能的调节。

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