Abstract
We develop a sensitive fluorescence method for DNA methyltransferase (MTase) assay based on T7 RNA polymerase-mediated transcription amplification and duplex-specific nuclease (DSN)-assisted cyclic signal amplification. This method exhibits excellent specificity and high sensitivity with a detection limit of 0.015 U mL(-1), and it may be further applied for the screening of antimicrobial drugs.
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