[EN] NOVEL CHELATOR AND USE THEREOF<br/>[FR] NOUVEAU CHÉLATEUR ET SON UTILISATION
申请人:GE HEALTHCARE BIO SCIENCES AB
公开号:WO2011152782A1
公开(公告)日:2011-12-08
The present invention relates to dimeric pentadentate chelators with exceptionally strong binding of metal ions, for detection, immobilization and purification of biomolecules. Dimeric chelators offer a cooperativity of binding of two adjacent immobilized metal ions simultaneously to a histidine-tagged biomolecule, which gives advantageous properties regarding strength of binding compared to a corresponding monomer chelator. In addition, a dimer increases the selectivity (ease of separation) against non-tagged biomolecules with low metal-ion affinity. The dimeric pentadentate chelator according to the invention has the following general formula (I) wherein Sc is a scaffold or a connecting structure that contains at least two functional groups enabling coupling of two pentadentate chelators (PD), and PD is a pentadentate chelator having the formula (II).
本发明涉及具有异常强金属离子结合能力的二聚五齿螯合剂,用于检测、固定和纯化生物分子。二聚螯合剂提供了同时将两个相邻的固定金属离子与带组氨酸标签的生物分子结合的协同作用,这相比于相应的单体螯合剂具有更强的结合力。此外,二聚体增加了对金属离子亲和力较低的非标记生物分子的选择性(易于分离)。根据本发明的二聚五齿螯合剂具有以下一般式(I),其中Sc是包含至少两个功能基团以连接两个五齿螯合剂(PD)的支架或连接结构,PD是具有以下一般式(II)的五齿螯合剂。