Amino-sulfhydryl cross-linking reagents that are cleavable under mildly acidic conditions are disclosed. Also disclosed are methods of making the cross-linkers, as well as methods of using the cross-linkers, e.g., to deliver a biologically active substance across the membranes of selected cells in a heterogeneous cell population; once inside the cell the active substance is released, intact, by the transient, mild acidity of certain cell structures. Finally, a method of characterizing complex multi-chain protein structures is disclosed.
本发明公开了可在温和酸性条件下断裂的
氨基
硫醇交联试剂。还公开了制备
交联剂的方法,以及使用
交联剂的方法,例如,将
生物活性物质递送到异质细胞群中的选择性细胞膜上;一旦进入细胞,活性物质通过某些细胞结构的短暂、温和的酸性释放,完整地释放。最后,公开了一种表征复杂多链蛋白质结构的方法。