锇配合物与不匹配的甲基胞嘧啶结合:相邻碱基的影响。

Akiko Nomura, Kazuki Tainaka, Akimitsu Okamoto
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引用次数: 0

摘要

我们研究了错配DNA双链中5-甲基胞嘧啶锇络合物形成的效率。在完全匹配的双链中没有观察到锇络合,而在不匹配的双链中,络合的位置和效率取决于5-甲基胞嘧啶的5'邻近碱基。特别是,当不匹配碱基对的5'侧相邻的碱基是胸腺嘧啶时,观察到独特的副反应。然而,不匹配的碱基对并不影响锇与甲基化DNA络合的选择性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Osmium complex binding to mismatched methylcytosine: effect of adjacent bases.

We investigated the efficiency of osmium complex formation at 5-methylcytosine in mismatched DNA duplexes. Osmium complexation was not observed in fully matched duplexes, whereas the complexation site and efficiency in mismatched duplexes depended on the 5'-neighboring base of the 5-methylcytosine. In particular, when the base adjacent to the 5' side of the mismatched base pair was thymine, a unique side reaction was observed. However, the mismatched base pairs did not influence the selectivity of osmium complexation with methylated DNA.

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