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Updated: Jul 1, 2026

DNAzyme-dependent Analysis of rRNA 2’-O-Methylation
Published on: September 16, 2019
DNAzymes and ribozymes carrying 2'-C-methyl nucleotides
Rodrigo Pontiggia1, Laura Robaldo, Javier Montserrat
1INGEBI, Vuelta de Obligado 2490, 1428 Buenos Aires, Argentina.
Abstract:
DNAzymes and Ribozymes find applications as inhibitors of gene expression and in detection systems such as biosensors, among others. In particular, we are interested in the properties of hammerhead ribozymes carrying 2'-C-methylnucleotides and 10-23 DNAzymes containing (2'R) or (2'S)- 2'-C-methyl 2'-deoxynucleotides. In this work a new synthesis of 2'-C-Methyluridine phosphoramidite is presented. Special emphasis is dedicated to the improvement of the protection of the tertiary 2'-hydroxyl group. Comparison to previous protecting strategies as well as the stability under oligonucleotide synthesis conditions is discussed.2'-C-methyl-2'-deoxynucleosides show differential preferred conformations depending on the configuration of the 2'-carbon. The influence of these modifications on the activity of 10-23 DNAzymes is also assessed.
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