TCO-PEG12-amine 是一种异双功能 PEG 连接剂,含有反式环辛烯(TCO)基团、PEG12 间隔臂和末端伯胺基。TCO 基团可与四嗪进行快速的生物正交连接反应;末端胺基则可作为进一步偶联的反应位点,与活化羧基、NHS 酯及其他适合与胺反应的功能基团进行偶联。PEG12 间隔臂可增加亲水性,并在两个反应端基之间提供柔性的空间间隔。TCO-PEG12-amine 可用于生物偶联、蛋白质和多肽修饰,以及其他需要引入 TCO 功能基团的应用。
TCO-PEG12-amine is a heterobifunctional PEG linker containing a trans-cyclooctene (TCO) group, a PEG12 spacer, and a terminal primary amine. The TCO group undergoes rapid bioorthogonal ligation with tetrazines, while the terminal amine provides a functional handle for conjugation with activated carboxyl groups, NHS esters, and other suitable amine-reactive functionalities. The PEG12 spacer increases hydrophilicity and provides a flexible separation between the two reactive termini. TCO-PEG12-amine can be used in bioconjugation, protein and peptide modification, and other applications requiring the introduction of a TCO functionality.