The invention provides a method for labeling a nucleic acid comprising N6-methyl adenine. The method comprises forming an alpha-amino radical on the N6-methyl group of N6mAde, and capturing the alpha-amino radical with a radical acceptor comprising a nitrosopyridyl group. The presence of N6mAde in a nucleic acid may then be established by detection of the labeled nucleic acid, or the labeled nucleic acid may be extracted or further modified using the label. Also provided is a method for mapping the position of N6mAde within a target nucleic acid, and probe molecules and kits for use in the method.
本发明提供了一种标记含有N6-甲基
腺嘌呤核酸的方法。该方法包括在N6-甲基
腺嘌呤上形成α-
氨基自由基,并使用含有亚
硝基吡啶基团的自由基受体捕获α-
氨基自由基。然后,可以通过检测标记的核酸来确定核酸中N6-甲基
腺嘌呤的存在,或者可以使用标记提取或进一步修改标记的核酸。还提供了一种在目标核酸中映射N6-甲基
腺嘌呤位置的方法,以及用于该方法的探针分子和试剂盒。