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首页> 外文期刊>Electroanalysis >Histidine modified electrode and its application to the electrochemical studies of hemeproteins
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Histidine modified electrode and its application to the electrochemical studies of hemeproteins

机译：组氨酸修饰电极及其在血红蛋白电化学研究中的应用

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Histidine can be immobilized on a silver electrode surface via a reaction between the substrate metal and the imidazole group of the amino acid. Such a modified electrode is not only electroactive, stable and long-lived but also can facilitate both the oxidation and reduction of myoglobin and cytochrome c. Experimental results revealed that the modified electrode itself yielded a pair of redox waves in 0.20 mol/L NaAc-HAc buffer (pH 5.5). These anodic and cathodic peaks were at about 0.28 V and 0.06 V (vs. SCE), respectively. The addition of the biological macromolecules myoglobin or cytochrome c to the buffer solution did not cause any new redox peaks, but the intensity of the existing pair of anodic and cathodic peaks clearly increased after either of the biological compounds was added. Since the modifier material, histidine, is an important biomolecule, an interesting modified electrode for bioelectrochemistry is reported here. [References: 30]
机译：组氨酸可以通过底物金属与氨基酸的咪唑基团之间的反应固定在银电极表面上。这种修饰的电极不仅是电活性的，稳定的和长寿命的，而且可以促进肌红蛋白和细胞色素c的氧化和还原。实验结果表明，修饰电极本身在0.20 mol / L NaAc-HAc缓冲液（pH 5.5）中产生一对氧化还原波。这些阳极和阴极峰分别在约0.28 V和0.06 V（vs. SCE）处。向缓冲溶液中添加生物大分子肌红蛋白或细胞色素c不会引起任何新的氧化还原峰，但是在添加任何一种生物化合物后，现有一对阳极和阴极峰的强度明显增加。由于修饰剂材料组氨酸是重要的生物分子，因此在此报道了一种有趣的生物电化学修饰电极。 [参考：30]

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