Disclosed is a xanthenone-based composition for measuring a binding affinity between a nucleic acid and a test substance, which contains an organic fluorescent substance capable of binding to an RNA and which emits fluorescence having an intensity greater while the organic fluorescent substance is liberated from an RNA than while the organic fluorescent substance is bound to an RNA. This enables a highly accurate and easy measurement of a binding affinity between a test substance and a nucleic acid, and allows various substances to be examined as a test substance.
本发明公开了一种用于测量核酸与测试物质之间结合亲和力的基于
氧杂蒽酮的组合物,该组合物含有一种能够与 RNA 结合的有机荧光物质,当有机荧光物质从 RNA 中释放出来时,其发出的荧光强度大于有机荧光物质与 RNA 结合时的强度。这样就能高精度、简便地测量测试物质与核酸之间的结合亲和力,并可将各种物质作为测试物质进行检测。