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Electrocatalysis of redox enzymes shows wide application for biosensing. DNAzymes exhibiting specific catalytic activities have aroused great interest recently. However, there are few studies on the electrocatalysis between DNAzyme and electron mediator. In this paper, based on the electrocatalysis of methylene blue (MB) and horseradish peroxidase mimicking DNAzyme (HRP‐DNAzyme), an amplified electrochemical...
In this paper, a novel strategy of electrochemical amplified detection of thrombin based on G‐quadruplex‐linked supersandwich structure was described. In the presence of K+ and hemin, the original hairpin DNA sequence activated an autonomous cross‐opening process to build up hemin/G‐quadruplex structure and can hybridize to form supersandwich structure containing multiple signal labels. With the addition...
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