Evidence that tRNA modifying enzymes are important in vivo targets for 5-fluorouracil in yeast

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Evidence that tRNA modifying enzymes are important in vivo targets for 5-fluorouracil in yeast.

We have screened a collection of haploid yeast knockout strains for increased sensitivity to 5-fluorouracil (5-FU). A total of 138 5-FU sensitive strains were found. Mutants affecting rRNA and tRNA maturation were particularly sensitive to 5-FU, with the tRNA methylation mutant trm10 being the most sensitive mutant. This is intriguing since trm10, like many other tRNA modification mutants, lack...

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Nonessential tRNA modifications by methyltransferases are evolutionarily conserved and have been reported to stabilize mature tRNA molecules and prevent rapid tRNA decay (RTD). The tRNA modifying enzymes, NSUN2 and METTL1, are mammalian orthologs of yeast Trm4 and Trm8, which are required for protecting tRNA against RTD. A simultaneous overexpression of NSUN2 and METTL1 is widely observed among...

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ژورنال

عنوان ژورنال: RNA

سال: 2008

ISSN: 1355-8382

DOI: 10.1261/rna.966208