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. 2015 Apr 27;112(19):5903–5908. doi: 10.1073/pnas.1420361112

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Fig. 1. — The sequence and activity of a Na⁺-specific DNAzyme. (A) Secondary structure of an in vitro selected Na⁺-specific DNAzyme (A43 clone) in its cis-cleaving form. Regions that are colored in blue were removed by truncation. (B) Secondary structure of the trans-cleaving NaA43 DNAzyme. (C) Plot of the fraction of cleavage product (percentage) versus the incubation time for the cis-cleaving NaA43 DNAzyme at different concentrations of Na⁺. (Inset) k_obs (per minute) values for the NaA43 DNAzyme from C. The calculated SD was less than 10% for all samples.