申请人:Jaccard Hughes
公开号:US20070243568A1
公开(公告)日:2007-10-18
The invention relates to substrates for O
6
-alkylguanine-DNA alkyltransferases (AGT) of formula R
1
-A-X—CH
2
—R
3
—R
4
-L
1
, wherein A is a group recognized by AGT as a substrate, X is oxygen or sulfur, R
1
is a group —R
2
-L
2
or a group R
5
, R
2
and R
4
are, independently of each other, a linker, R
3
is an aromatic or a heteroaromatic group, or an optionally substituted unsaturated alkyl, cycloalkyl or heterocyclyl group with the double bond connected to CH
2
, R
5
is arylmethyl or heteroarylmethyl or an optionally substituted cycloalkyl, cycloalkenyl or heterocyclyl group, L
1
is a label, a plurality of same or different labels, a bond connecting R
4
to A forming a cyclic substrate, or a further group —R
3
CH
2
—X-A-R
1
, and L
2
is a label or a plurality of same or different labels. The invention further relates to methods of transferring a label from these substrates to O
6
-alkylguanine-DNA alkyltransferases (AGT) and AGT fusion proteins.
本发明涉及O6-烷基鸟嘌呤-DNA烷基转移酶(AGT)的底物,其化学式为R1-A-X—CH2—R3—R4-L1,其中A是被AGT识别为底物的基团,X是氧或硫,R1是一个基团,可以是—R2-L2或R5,R2和R4分别是连接基团,R3是芳香或杂芳基团,或者是一个可选取代的不饱和烷基、环烷基或杂环基团,其双键连接到CH2,R5是芳基甲基或杂芳基甲基或可选取代的环烷基、环烯基或杂环基团,L1是标记,多个相同或不同的标记,或者是连接R4和A形成环状底物的键,或者是进一步的基团—R3CH2—X-A-R1,L2是标记或多个相同或不同的标记。本发明还涉及将这些底物上的标记转移给O6-烷基鸟嘌呤-DNA烷基转移酶(AGT)和AGT融合蛋白的方法。