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Transfer-tRNAs (tRNAs) are central entities for translation that deliver amino acids to the ribosome to translate genetic information in an mRNA-template dependent manner. Recent discoveries from our laboratory show that in E. coli and B. licheniformis, some tRNAs are poorly charged despite the plentiful intracellular cognate amino acid. Specifically, tRNAs carrying amino acids that exert toxicity and inhibit bacterial growth when added separately to the growth medium are poorly charged. Here, we discuss various evolutionary strategies different bacterial cells have adopted to precisely hone the competition between amino acid utilization for translation and proliferation and combat the inhibitory effect toward maximizing bacterial fitness. These data add a new twist to the amino acid flux models and to our understanding of the complex intimate link between dynamics of translation and bacterial growth.

Original publication

DOI

10.1080/15476286.2017.1306174

Type

Journal article

Journal

RNA Biol

Publication Date

2018

Volume

15

Pages

991 - 994

Keywords

Amino acids, aminoacyl-tRNA-synthetases, bacterial growth, bacterial translation, tRNA, Amino Acids, Animals, Bacteria, Environmental Pollutants, Humans, Protein Biosynthesis