Addition of a Second Binding Site Increases the Dynamic Range but Alters the Cellular Localization of a Red Fluorescent Probe for Mobile Zinc
作者:Andrei Loas、Robert J. Radford、Stephen J. Lippard
DOI:10.1021/ic500732z
日期:2014.7.7
photophysical properties of ZBR4 and ZR1, two resorufin-based ditopic probes for mobile zinc. Upon binding Zn2+, the sensors display 14- and 41-fold enhancements of their red fluorescence emission, respectively. In contrast to ZR1 and other members of the ZBR family, which accumulate in the endoplasmic reticulum, ZBR4 spontaneously localizes to the mitochondria of HeLa cells. The modular approach in designing
我们报告了 ZBR4 和 ZR1 的合成和光物理特性,ZBR4 和 ZR1 是用于移动锌的两种基于试卤灵的双位探针。在结合 Zn 2+ 后,传感器分别显示其红色荧光发射增强 14 倍和 41 倍。与 ZR1 和 ZBR 家族的其他成员在内质网中积累不同,ZBR4 自发定位于 HeLa 细胞的线粒体。设计构建体的模块化方法促进了旨在调整未来探针的锌结合和细胞内靶向特性的同源策略。