Abstract
This review outlines the design and synthesis of oligonucleotides bearing 2-modified residues at predetermined positions within the strand. The relative merits of incorporation of reactive carboxyl, carbonyl, iodoacetamide and disulfide-containing groups into oligonucleotides were considered along with solid-phase synthesis of DNA 2- conjugates. The specific cross-linking of 2-substituted oligonucleotides to nucleic acid-binding proteins (transcription factor NF-κB, restriction-modification enzymes) was shown to be helpful in scanning the protein-DNA interface and studying the conformational dynamics of biopolymer ensembles. The future perspectives of chemically reactive DNA constructs as specific protein decoys are discussed.
Keywords: oligonucleotides, synthesis, Covalent Trapping, Protein, –, DNA, cross-linking
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