Direct electron transfer-type bioelectrocatalysis by membrane-bound aldehyde dehydrogenase from Gluconobacter oxydans and cyanide effects on its bioelectrocatalytic properties
Direct electron transfer-type bioelectrocatalysis by membrane-bound aldehyde dehydrogenase from Gluconobacter oxydans and cyanide effects on its bioelectrocatalytic properties
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DOI：
10.1016/j.elecom.2020.106911
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发表时间：
2021-01-09
影响因子：
5.4
通讯作者：
Kano, Kenji
中科院分区：
文献类型：
--
作者：
Adachi, Taiki;Kitazumi, Yuki;Kano, Kenji
研究了氧化葡萄糖醛酸脱氢酶（AlDH）的生物电催化性能。AlDH在几种电极上对乙醛的氧化均表现出直接电子转移（DET）型生物电催化活性。基于部分随机取向模型，估算了生物电催化氧化乙醛的动力学和热力学参数。此外，在多壁碳纳米管修饰电极上，CN与AlDH的配位使酸性条件下DET型生物电催化的方向转变为乙酸还原。从热力学角度对这些现象进行了讨论。
The bioelectrocatalytic properties of membrane-bound aldehyde dehydrogenase (AlDH) from Gluconobacter oxydans NBRC12528 were evaluated. AlDH exhibited direct electron transfer (DET)-type bioelectrocatalytic activity for acetaldehyde oxidation at several kinds of electrodes. The kinetic and thermodynamic parameters for bioelectrocatalytic acetaldehyde oxidation were estimated based on the partially random orientation model. Moreover, at the multi-walled carbon nanotube-modified electrode, the coordination of CNto AlDH switched the direction of the DET-type bioelectrocatalysis to acetate reduction under acidic conditions. These phenomena were discussed from a thermodynamic viewpoint.