Chemical synthesis of oligonucleotides containing the (6-4) photoproduct at the thymine-cytosine site and its repair by (6-4) photolyase.

S Iwai, T Mizukoshi, K Hitomi, T Todo
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引用次数: 2

Abstract

A phosphoramidite building block of the T(6-4)C photoproduct was synthesized. One of the differences from T(6-4)T was formation of cytosine hydrates by UV irradiation, and the other was acylation of the amino function with the capping reagent. The capping step was omitted to improve the yield of the desired oligonucleotides. Characterization of the (6-4) photolyase using one of the oligonucleotides revealed that this enzyme restores the pyrimidines in T(6-4)C to their original structures.

胸腺嘧啶-胞嘧啶位点上含有(6-4)光产物的寡核苷酸的化学合成及其(6-4)光解酶的修复。
合成了T(6-4)C光产物的磷酰胺基块。与T(6-4)T的不同之处在于紫外照射下形成了胞嘧啶水合物,另一个不同之处在于用盖层试剂使氨基功能酰化。为了提高所需寡核苷酸的产率,省略了盖帽步骤。利用其中一种寡核苷酸对(6-4)光解酶进行表征,发现该酶可将T(6-4)C中的嘧啶还原为其原始结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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