A method for labeling acyl carrier protein (ACP) fusion proteins with a wide variety of different labels is disclosed. The method relies on the transfer of a label from a coenzyme A type substrate to an ACP fusion protein using a holo-acyl carrier protein synthase (ACPS) or a homologue thereof. The method allows detecting and manipulating the fusion protein, both in vitro and in vivo, by attaching molecules to the fusion proteins that introduce a new physical or chemical property to the fusion protein. Examples of such labels are, among others, spectroscopic probes or reporter molecules, affinity tags, molecules generating reactive radicals, cross-linkers, ligands mediating protein-protein interactions or molecules suitable for the immobilization of the fusion protein.
本发明揭示了一种用各种不同标记标记酰基载体蛋白(A
CP)融合蛋白的方法。该方法依赖于从
辅酶A型底物向A
CP融合蛋白转移标签,使用全态酰基载体蛋白
合成酶(A
CPS)或其同源物。该方法允许通过将分子附加到融合蛋白上引入新的物理或
化学特性来检测和操作融合蛋白,无论是在体外还是在体内。此类标签的示例包括,光谱探针或报告分子,亲和标记,产生反应性自由基的分子,
交联剂,介导蛋白质相互作用的
配体或适用于固定融合蛋白的分子。