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The synthesis of 2'-modified oligoribonucleotides allows for the creation of reactive aldehyde groups that can cross-link with bacterial ribonuclease P without compromising thermal stability.
1,2-Diol-oligoribonucleotides were prepared using fully protected 2'-O-[2-(2,3-dihydroxypropyl)amino-2-oxoethyl]uridine 3'-phosphoramidite. Incorporation of the 2'-modified uridine residue into oligonucleotide chains does not significantly affect the thermal stability of RNA and RNA-DNA duplexes. Periodate oxidation of the 1,2-diol results in reactive 2'-aldehyde oligoribonucleotides. Further application of these oligonucleotides for cross-linking with bacterial ribonuclease P was investigated.
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Khomyakova et al. (2012) studied this question.
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