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Force dependent metalloprotein conductance by conducting atomic force microscopy

机译:通过进行原子力显微镜观察力依赖的金属蛋白电导

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Our ability to analyse charge transport through a biological macromolecule, pertinent to our understanding not only of biological redox processes but also, for example, to our interpretation of tunnelling imaging, remains a significant practical and theoretical issue. Though much information can be gained by carrying out such examinations at a molecular level, there exist few methods where such controlled analyses are, in fact, feasible. Here we report on the electron transport characteristics of a blue copper metalloprotein as characterized at a refined level by conductive-probe atomic force microscopy. The modulation of this conductance with compressional force has also been examined. Though highly resistive, observations are consistent with the ability of the protein matrix to mediate appreciable tunnelling current. This work, then, paves the way for designed implementation of biomacromolecules into electronic devices.
机译:我们分析通过生物大分子的电荷传输的能力,不仅与我们对生物氧化还原过程的理解有关,而且与例如我们对隧道成像的解释有关,仍然是一个重要的实践和理论问题。尽管通过在分子水平上进行此类检查可以获取很多信息,但实际上很少有方法可以进行这种受控分析。在这里,我们报告了通过导电探针原子力显微镜在精细水平上表征的蓝色铜金属蛋白的电子传输特性。还已经研究了这种电导在压力作用下的调制。尽管具有高电阻,但观察结果与蛋白质基质介导明显的隧穿电流的能力一致。然后,这项工作为生物大分子在电子设备中的设计实现铺平了道路。

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