Oligonucleotides bearing 5-Formyl-2′-O-methyluridine: Preference in binding affinity to the NF-κB (p50) 2 homo- and p50/p65 heterodimers

5-Formyl-2′-O-methyluridine was incorporated into the various positions of oligonucleotide 26-mers containing the NF-κB binding sequence. Some of them showed binding selectivity toward the homo- and heterodimers of subunits of NF-κB.