Nucleic acid catenane with a linking duplex biosensor for detection of a microorganism target

摘要

The present application is directed to biosensors and methods for detecting a microorganism target in a sample using a mechanically interlocked nucleic acid catanane, wherein an enzyme from the microorganism target or that is activated by a molecule from the microorganism target cleaves a linkage in a first single-stranded nucleic acid ring of the catanane structure, allowing rolling-circle amplification to occur and the presence of rolling-circle amplification products indicates the presence of the microorganism in the sample.