Abstract
We previously reported a molecular beacon-mRNA (MB-mRNA) strategy for nucleic acid detection/sensing in a cell-free translation system using unmodified RNA as a probe. Here in this presentation, we report that a combination with RNase H activity, which induces an additional process of irreversible cleavage of MB-domain, achieves an improved sequence selectivity (one nucleotide selectivity) and an enhanced sensitivity. This improved system finally enabled visible sensing of target nucleic acid sequence at a single nucleotide resolution under isothermal conditions.
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