The invention relates to pyrimidines suitable as substrates for O
6
-alkylguanine-DNA alkyltransferases (AGT) of formula (I)
wherein R
1
is hydrogen, lower alkyl, halogen, cyano, trifluoromethyl or azido; R
2
is a linker; and L is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from pyrimidines of formula (I) to O
6
-alkylguanine-DNA alkyltransferases (AGT) and AGT fusion proteins.
本发明涉及适用于O6-烷基
鸟嘌呤-DNA烷基转移酶(AGT)的
嘧啶底物的公式(I),其中R1为氢、低级烷基、卤素、
氰基、三
氟甲基或
叠氮基;R2为连接剂;L为标记或同一或不同的多个标记。本发明还涉及将公式(I)的
嘧啶从标记转移至O6-烷基
鸟嘌呤-DNA烷基转移酶(AGT)和AGT融合蛋白的方法。