The present invention relates to a kit for the labelling of biomolecules bearing reactive amino or hydroxyl groups. The kit consists of a Reagent A and a Reagent B, individually packaged, comprising: a mixture of a carboxylated labelling compound and a tertiary amine (Reagent A); and a coupling reagent (Reagent B). Upon contacting Reagent A with Reagent B, the carboxylated labelling compound is activated in-situ by the coupling reagent (a guanidinium, or uronium salt) in the presence of the tertiary amine. The active form of the carboxylated labelling compound is reacted with a biomolecules bearing reactive amino or hydroxyl groups, with formation of a stable covalent bond between the carboxylated labelling compound and the biomolecule.
本发明涉及一种对带有活性
氨基或羟基的
生物大分子进行标记的试剂盒。该试剂盒包括单独包装的试剂 A 和试剂 B,其中试剂 A 是羧基化标记化合物和叔胺的混合物;试剂 B 是偶联试剂。试剂 A 与试剂 B 接触后,羧化标记化合物在叔胺存在下被偶联试剂(
胍盐或
脲盐)原位活化。羧化标记化合物的活性形式与带有活性
氨基或羟基的
生物大分子反应,在羧化标记化合物和
生物大分子之间形成稳定的共价键。