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Updated: Apr 23, 2026

A Nonsequencing Approach for the Rapid Detection of RNA Editing
Published on: April 21, 2022
A-to-I editing on tRNAs: biochemical, biological and evolutionary implications
Adrian Gabriel Torres1, David Piñeyro1, Liudmila Filonava1
1Institute for Research in Biomedicine (IRB Barcelona), C/ Baldiri Reixac 10, Barcelona 08028, Catalonia, Spain.
Abstract:
Inosine on transfer RNAs (tRNAs) are post-transcriptionally formed by a deamination mechanism of adenosines at positions 34, 37 and 57 of certain tRNAs. Despite its ubiquitous nature, the biological role of inosine in tRNAs remains poorly understood. Recent developments in the study of nucleotide modifications are beginning to indicate that the dynamics of such modifications are used in the control of specific genetic programs. Likewise, the essentiality of inosine-modified tRNAs in genome evolution and animal biology is becoming apparent. Here we review our current understanding on the role of inosine in tRNAs, the enzymes that catalyze the modification and the evolutionary link between such enzymes and other deaminases.
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