The present invention provides a fluorescent dye that incorporates a pentavalent phosphorus or arsenic into its ring structure. Also provided is a fluorescence energy transfer system that comprises the above fluorescent dye and a second dye, where the second dye is capable of energy transfer with the fluorescent dye. Additionally provided is a kit for labeling a target molecule. In further embodiments, another kit for labeling a target molecule is provided. A target molecule labeled with the above-described fluorescent dye is also provided. In additional embodiments, methods of labeling a target molecule are provided.
本发明提供了一种荧光
染料,其环结构中包含五价
磷或
砷。还提供了一种荧光能量转移系统,该系统包括上述荧光
染料和第二种
染料,其中第二种
染料能够与荧光
染料进行能量转移。此外还提供了一种用于标记目标分子的试剂盒。在进一步的实施例中,还提供了另一种用于标记目标分子的试剂盒。还提供了用上述荧光
染料标记的目标分子。在其他实施例中,提供了标记目标分子的方法。