Photoreaction of DNA Containing 5-Halouracil and its Products.

Photoreaction of DNA Containing 5-Halouracil and its Products.
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DOI:
10.1111/php.13521
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发表时间:
2022-05
影响因子:
3.3
通讯作者:
Sugiyama, Hiroshi
Sugiyama, Hiroshi
中科院分区:
生物学3区
文献类型:
--
作者:
Tashiro, Ryu;Sugiyama, Hiroshi

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5-卤尿嘧啶是一种DNA碱基类似物,其中胸腺嘧啶C5位的甲基被卤素原子取代,已用于DNA损伤的研究。在DNA链中,由5-卤代尿嘧啶产生的尿嘧啶自由基通过夺氢反应引起DNA损伤。我们分析了5-卤脲嘧啶在不同DNA结构中的光反应,发现该反应是DNA结构依赖性的。在这篇综述中,我们总结了5-卤脲嘧啶在各种DNA局部结构的反应性的分析结果。在5-卤尿嘧啶分子中,5-溴尿嘧啶已被用作分析光诱导的通过DNA的电子转移的探针。还描述了使用5-溴尿嘧啶为基础的电子转移系统的沟结合剂/DNA和蛋白质/DNA复合物的分析。
5-Halouracil, which is a DNA base analog in which the methyl group at the C5 position of thymine is replaced with a halogen atom, has been used in studies of DNA damage. In DNA strands, the uracil radical generated from 5-halouracil causes DNA damage via a hydrogen-abstraction reaction. We analyzed the photoreaction of 5-halouracil in various DNA structures and revealed that the reaction is DNA-structure dependent. In this review, we summarize the results of the analysis of the reactivity of 5-halouracil in various DNA local structures. Among the 5-halouracil molecules, 5-bromouracil has been used as a probe in the analysis of photo-induced electron transfer through DNA. The analysis of groove-binder/DNA and protein/DNA complexes using a 5-bromouracil-based electron transfer system is also described.
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