This paper describes a new series of organometallic water-soluble chelators combining a redox moiety (ferrocene) and a selective Ca2+ chelator (BAPTA) separated by an ethynyl bridge. We report the synthesis and characterization of organometallic derivatives of the BAPTA chelator featuring one (2a) and two ferrocenyl (2b) moieties. Single crystal X-ray structural analysis on these chelators revealed unexpected
The combination of a ferrocenyl moiety with BAPTA provides a novel, water-soluble, redox-active chelator. This chelator behaving as a conformational sensor exhibits an unexpected electrochemical response with high affinity and selectivity for calcium.
Fluorogenic and genetic targeting of a red-emitting molecular calcium indicator
作者:Sylvestre P. J. T. Bachollet、Nicolas Pietrancosta、Jean-Maurice Mallet、Blaise Dumat
DOI:10.1039/d2cc01792j
日期:——
strategy for the fluorogenic and genetic targeting of a calcium indicator by combining a protein fluorogen with the BAPTA sensing group. The resulting dual-input probe acts like a fluorescent AND logic gate with a Ca2+-sensitive red emission that is activated only upon reaction with HaloTag with a 25-fold intensity enhancement and can be used for wash-free calcium imaging in HeLa cells. The modular all-molecular
我们通过将蛋白质荧光原与 BAPTA 传感组相结合,介绍了一种钙指示剂的荧光和遗传靶向策略。产生的双输入探针就像一个带有 Ca 2+敏感红色发射的荧光与逻辑门,仅在与 HaloTag 反应时激活,强度增强 25 倍,可用于 HeLa 细胞中的免洗钙成像. 依赖于成熟的自标记蛋白质标签的模块化全分子设计为调整光物理特性或靶向不同的分析物开辟了未来的可能性。