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Open AccessJournal ArticleDOI

tRNA biology charges to the front

Eric M. Phizicky, +1 more
- 01 Sep 2010 - 
- Vol. 24, Iss: 17, pp 1832-1860
TLDR
This review highlights new findings on the diverse pathways of tRNA maturation, and on the formation and function of a number of modifications, on the regulation of t RNA biosynthesis, quality control tRNA turnover mechanisms, widespread tRNA cleavage pathways activated in response to stress and other growth conditions.
Abstract
tRNA biology has come of age, revealing an unprecedented level of understanding and many unexpected discoveries along the way. This review highlights new findings on the diverse pathways of tRNA maturation, and on the formation and function of a number of modifications. Topics of special focus include the regulation of tRNA biosynthesis, quality control tRNA turnover mechanisms, widespread tRNA cleavage pathways activated in response to stress and other growth conditions, emerging evidence of signaling pathways involving tRNA and cleavage fragments, and the sophisticated intracellular tRNA trafficking that occurs during and after biosynthesis.

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Boosting CRISPR/Cas9 multiplex editing capability with the endogenous tRNA-processing system

TL;DR: A general strategy to produce numerous gRNAs from a single polycistronic gene via the endogenous tRNA-processing system is developed and shown to significantly increase CRISPR/Cas9 multiplex editing capability and efficiency in plants and is expected to have broad applications for small RNA expression and genome engineering.
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RNA cytosine methylation by Dnmt2 and NSun2 promotes tRNA stability and protein synthesis.

TL;DR: A biologically important function for cytosine-C5 tRNA methylation in mammals is established and it is suggested that this modification promotes mouse development by supporting protein synthesis.
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Biosynthesis and Function of Posttranscriptional Modifications of Transfer RNAs

TL;DR: A global survey of tRNA modification enzymes shows that the functional constraints that drive the presence of modifications are often conserved, but the solutions used to fulfill these constraints differ among different kingdoms, organisms, and species.
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