Several key probe design features are illustrated inFigure 1A. Our labeling protocol adds a C residue to thethe 3 ' end of the miRNA. The inclusion of G residue at the5 ' end increases the stability of binding to a target labeledmiRNA. Empirical probe selection studies have shownthat the incorporation of a 5 ' end hairpin provides valuablediscrimination for increasing target size specificity becauseIt destabilizes water probe hybridization to larger, non-target RNAs.
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