Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 129, Issue 39, Pages 11896-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja074218y
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We have demonstrated a fully covalent, signal-on E-DNA architecture based on the target-induced resolution of a DNA pseudokont. In the absence of target, the electrode-bound DNA probe adopts a pseudoknot conformation that segregates an attached methylene blue (MB) from the electrode. Upon target binding, the pseudoknot is resolved, leading to the formation of a single-stranded DNA element that supports electron transfer from the methylene blue to the electrode.
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