Conductance of a biomolecular wire
Conductance of a biomolecular wire
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DOI：
10.1073/pnas.0600593103
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发表时间：
2006-06-06
影响因子：
11.1
通讯作者：
Lindsay, Stuart M.
中科院分区：
文献类型：
--
作者：
Visoly-Fisher, Iris;Daie, Kayvon;Lindsay, Stuart M.
类胡萝卜素（Car）在高等植物的反应中心充当释放不需要的电子的“电线”。这种“旁路”电子传导的一个步骤被认为是由Car氧化介导的。我们已经进行了直接测量的单车分子的电导下的电位控制在膜模拟环境中，我们发现，当汽车被氧化的电导增强和电子衰减常数（β）降低。然而，中性分子可能已经具有足够的导电性来解释观察到的电子转移速率。
Carotenoids (Car) act as "wires" that discharge unwanted electrons in the reaction center of higher plants. One step in this "side-path" electron conduction is thought to be mediated by Car oxidation. We have carried out direct measurements of the conductance of single-Car molecules under potential control in a membrane-mimicking environment, and we found that when Car are oxidized conductance is enhanced and the electronic decay constant (beta) is decreased. However, the neutral molecule may already be conductive enough to account for observed electron transfer rates.