Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education), College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin, 541004, China.
Analyst. 2012 Jun 21;137(12):2770-3. doi: 10.1039/c2an35416k. Epub 2012 May 3.
We have developed a simple, highly sensitive and selective fluorescence polarization assay for the detection of potassium ions based on target induced DNA conformational switch from hairpin to G-quadruplex enhanced fluorescence polarization. The assay was applied in the detection of low nM concentrations of potassium ions and was highly selective over other cations.
我们开发了一种简单、高灵敏、高选择性的荧光偏振检测钾离子的方法,该方法基于目标诱导的 DNA 构象从发夹到 G-四链体的转变,从而增强了荧光偏振。该方法可用于检测低纳摩尔浓度的钾离子,并且对其他阳离子具有高度选择性。