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Front Cover. Designed DNA and RNA triplexes may be spin‐labeled using the guanine derivative shown in the upper right‐hand corner of the cover graphic. The labeling does not require a covalent bond and is based on Watson‐Crick plus Hoogsteen base pairing of the guanine base and unpaired pyrimidines of the triplex. The resulting complexes have dissociation constants in the micromolar range, as reported...
Studying nucleic acids often requires labeling. Many labeling approaches require covalent bonds between the nucleic acid and the label, which complicates experimental procedures. Noncovalent labeling avoids the need for highly specific reagents and reaction conditions, and the effort of purifying bioconjugates. Among the least invasive techniques for studying biomacromolecules are NMR and EPR. Here,...
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