N(6)-Hydroperoxymethyladenosine: a new intermediate of chemical oxidation of N(6)-methyladenosine mediated by bicarbonate-activated hydrogen peroxide.
N(6)-Hydroperoxymethyladenosine: a new intermediate of chemical oxidation of N(6)-methyladenosine mediated by bicarbonate-activated hydrogen peroxide.
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N-6-羟过氧甲基腺苷:碳酸氢盐激活的过氧化氢介导的 N-6-甲基腺苷化学氧化的新中间体
DOI:
10.1039/c5sc00484e
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发表时间:
2015-05-01
期刊:
影响因子:
8.4
通讯作者:
Zhou X
中科院分区:
文献类型:
--
作者:
Wu J;Xiao H;Wang T;Hong T;Fu B;Bai D;He Z;Peng S;Xing X;Hu J;Guo P;Zhou X
A new route is found in the chemical oxidation of N6-methyladenosine using a H2O2/bicarbonate system through the N6-hydroperoxymethyladenosine (oxm6A) intermediate. N 6-Methyladenosine (m6A) represents a relatively abundant modification in eukaryotic RNA. Because m6A has similar properties to adenosine and a low reactivity, limited research has been focused on this nucleoside. In this study, we revealed an important intermediate in the oxidation of m6A through the bicarbonate-activated peroxide system. Over the course of oxidation, we found a new mechanism in which N6-hydroxymethyladenosine (hm6A), N6-formyladenosine (f6A) and N6-hydroperoxymethyladenosine (oxm6A) were intermediate products, and adenosine was the final product. In this study, oxm6A was isolated using HPLC and characterized by mass spectrometry, NMR and diphenyl-1-pyrenylphosphine (DPPP) fluorescence detection. This study provides a new modified nucleoside and demonstrates oxidative demethylation of m6A by reactive oxygen species at the nucleobase level and in RNA strands.
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通讯作者:
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