Cleavage of RNA phosphodiester bonds by small molecular entities: a mechanistic insight

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Abstract

RNA molecules participate in many fundamental cellular processes either as a carrier of genetic information or as a catalyst, and hence, RNA has received increasing interest both as a chemotherapeutic agent and as a target of chemotherapy. In addition the dual nature of RNA has led to the RNA-world concept, i.e. an assumption that the evolution at an early stage of life was based on RNA-like oligomers that were responsible for the storage and transfer of information and as catalysts maintained primitive metabolism. Accordingly, the kinetics and mechanisms of the cleavage of RNA phosphodiester bonds have received interest and it is hoped they will shed light on the mechanisms of enzyme action and on the development of artificial enzymes. The major mechanistic findings concerning the cleavage by small molecules and ions and their significance for the development of efficient and biologically applicable artificial catalysts for RNA hydrolysis are surveyed in the present perspective.

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