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A Biomimetic Electrode Platform for Cytochrome c Electrochemical Studies

机译:用于细胞色素c电化学研究的仿生电极平台

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By employing a gold surface covered with the substituted mercaptopyrimidine 2-thiobarbituric acid(TBA), it was possible to prove the influence of the surface topography (through a fractal approach)and the formation of an H-bond network between the modified surface and the protein. Thespontaneous adsorption of a dense monolayer of cytochrome c led to a quasi-reversible redox behavior-1 with a high direct electron transfer rate constant (38 s ),with no measurable electrocatalytic effect. Theredox potential for cytochrome c in the adsorbed state has the same value to that reported for the freeprotein in solution. Our results suggest that TBA-covered electrodes act as a biomimetic platform thatmimic the natural environment to study redox proteins without interfering with their natural behavior.
机译:通过使用覆盖有取代巯基嘧啶2-硫代巴比妥酸(TBA)的金表面,可以证明表面形貌的影响(通过分形方法)以及在改性表面和表面之间形成H键网络的影响。蛋白。细胞色素c的致密单分子层的自发吸附导致准可逆的氧化还原行为-1,具有高的直接电子传递速率常数(38 s),而没有可测量的电催化作用。吸附态的细胞色素c的反调节电位与溶液中游离蛋白的报道电位相同。我们的研究结果表明,TBA覆盖的电极可作为仿生平台,模仿自然环境来研究氧化还原蛋白,而不会干扰其自然行为。

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