Looking beneath the surface to determine what makes DNA damage deleterious.

Looking beneath the surface to determine what makes DNA damage deleterious.
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DOI:
10.1016/j.cbpa.2014.03.018
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发表时间:
2014-08
影响因子:
7.8
通讯作者:
Greenberg, Marc M.
Greenberg, Marc M.
中科院分区:
生物学2区
文献类型:
--
作者:
Greenberg, Marc M.

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无嘌呤/无嘧啶和氧化脱碱基位点是由多种损伤剂产生的化学反应性 DNA 损伤。这些缺乏 Watson-Crick 碱基的分子对聚合酶的影响已有充分记录。最近,无碱基损伤的亲电子性质的多种后果已被揭示。该 DNA 损伤家族的成员已被证明会使修复酶失活并自发转化为更有害的损伤形式。无碱基位点反应性提供了对产生DNA损伤剂的细胞毒性的化学基础的深入了解,并且是通过观察看似简单的分子表面之下如何揭示生物学相关的化学复杂性的有价值的例子。
Apurinic/apyrimidinic and oxidized abasic sites are chemically reactive DNA lesions that are produced by a variety of damaging agents. The effects of these molecules that lack a Watson-Crick base on polymerase enzymes are well documented. More recently, multiple consequences of the electrophilic nature of abasic lesions have been revealed. Members of this family of DNA lesions have been shown to inactivate repair enzymes and undergo spontaneous transformation into more deleterious forms of damage. Abasic site reactivity provides insight into the chemical basis for the cytotoxicity of DNA damaging agents that produce them and are valuable examples of how looking beneath the surface of seemingly simple molecules can reveal biologically relevant chemical complexity.
DOI: 10.1042/bj20121908
发表时间: 2013-06-15
期刊: The Biochemical journal
影响因子: --
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