在DNA中Abasic站点的电子影响
Marc A McWilliams1, Rita Bhui1, David W Taylor1
1Department of Physics, The University of Texas at Dallas , 800 W. Campbell Rd., PHY 36, Richardson, Texas 75080, United States.
Journal of the American Chemical Society
|August 18, 2015
概括
在DNA中的亚基位显著影响电荷传输产量,产量随温度而增加,但相对于未受损坏的DNA而言却下降. 这一发现对于开发先进的DNA生物传感器至关重要.
科学领域:
- 分子生物学
- 生物物理
- 纳米技术
背景情况:
- 阿巴斯基位点是常见的DNA缺陷,并用于生物传感.
- 在DNA器件中基底部位的电子效应尚不清楚.
研究的目的:
- 研究基底点对DNA电荷传输的影响.
- 通过底层站点分析电荷传输的温度依赖行为.
主要方法:
- 在多重复合装置上对DNA双重单层进行温度控制的分析.
- 测量收费运输速度和收益率
主要成果:
- 通过底层单层的运输产量随温度增加.
- 通过基底点的相对产量随着温度的降低而降低,与不匹配的基底对不同.
- 在生理温度 (37°C) 上,基底部对产量的影响会增强.
- 电荷传输速度在很大程度上不受底层站点的影响,表现出Arrhenius行为.
结论:
- 阿巴斯基位点对DNA电荷传输有明显的影响.
- 了解这些影响对于设计和改进基于DNA的生物传感器和设备至关重要.
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