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s The authors describe a dual-signal electrochemical biosensor for highly sensitive determination of the HIV-1 related gene. This method is based on the application of cascaded toehold-mediated strand displacement reactions (TMSDRs) in combination with non-enzymatic target recycling amplification (TRA). A DNA machine with two TMSDRs was designed, and this resulted in reusable target and an output...
We describe a turn-on electrochemical biosensor for the detection of methyltransferases (MTases) causing DNA adenine methylation. This biosensor is based on insertion, methylation-resistant cleavage, signal enrichment caused by gold nanoparticles (AuNPs), and a signal probe-dragging strategy. A double-stranded DNA (dsDNA) containing identical MTase and methylation-resistant endonuclease (Mbo I) sites...
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