Highly effective molecule converting strategy based on enzyme-free dual recycling amplification for ultrasensitive electrochemical detection of ATP.

本文提出一种无酶且高效的小分子转化策略，用于构建超灵敏电化学ATP生物传感器。该策略基于目标驱动催化发夹组装（CHA）和Mg2+依赖DNAzyme循环双放大。ATP适配体片段Apt1和Apt2共同识别ATP，形成Apt1–ATP–Apt2结构，并通过toehold介导链置换启动CHA，循环生成HP1–HP2复合物。HP1–HP2与固...