A compound of general formula R
1
-L
1
-PCL-L
2
-R
2
is disclosed wherein PCL is a photolabile group; R
1
is a reactive moiety capable of modifying biomolecules without activation; L
1
is a non-cleavable linker or absent; L
2
is a non-cleavable linker or absent; R
2
is a reactive moiety partner of a pair of orthogonally reactive moieties that can react with each other in the presence or absence of a catalyst without activation and both reactive moieties are sufficiently stable under commonly applied biomolecule labeling conditions. In another embodiment of the compound, R
1
is a biomolecule. A kit comprising at least one of these compounds and a method that uses these compounds are also disclosed.
揭示了一种具有一般结构式R1-L1-PCL-
L2-R2的化合物,其中PCL是光敏基团;R1是一种具有修饰
生物分子而无需激活的反应性基团;L1是不可切断的连接物或不存在;
L2是不可切断的连接物或不存在;R2是一对可以在有或无催化剂存在的情况下相互反应的正交反应基团的反应性基团伴侣,且这两种反应基团在常用的
生物分子标记条件下具有足够的稳定性。在该化合物的另一实施例中,R1是一种
生物分子。还公开了包含至少一种这些化合物和使用这些化合物的方法的试剂盒。