Erratum to: Genotyping bacterial and fungal pathogens using sequence variation in the gene for the CCA-adding enzyme

Synthesis of the CCA end of essential tRNAs is performed either by CCA-adding enzymes or as a collaboration between enzymes restricted to CC- and A-incorporation. While the occurrence of such tRNA nucleotidyltransferases with partial activities seemed to be restricted to Bacteria, the first example of such split CCA-adding activities was reported in Schizosaccharomyces pombe. Here, we demonstrate that the choanoflagellate Salpingoeca rosetta also carries CC- and A-adding enzymes. However, these enzymes have distinct evolutionary origins. Furthermore, the restricted activity of the eukaryotic CC-adding enzymes has evolved in a different way compared to their bacterial counterparts. Yet, the molecular basis is very similar, as highly conserved positions within a catalytically important flexible loop region are missing in the CC-adding enzymes. For both the CC-adding enzymes from S. rosetta as well as S. pombe, introduction of the loop elements from closely related enzymes with full activity was able to restore CCA-addition, corroborating the significance of this loop in the evolution of bacterial as well as eukaryotic tRNA nucleotidyltransferases. Our data demonstrate that partial CC- and A-adding activities in Bacteria and Eukaryotes are based on the same mechanistic principles but, surprisingly, originate from different evolutionary events.

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Erratum to: Genotyping bacterial and fungal pathogens using sequence variation in the gene for the CCA-adding enzyme

Cited by 3 publications

References 2 publications

Design and validation of a real-time PCR technique for assessing the level of inclusion of fungus- and yeast-based additives in feeds

Design and validation of a real-time PCR technique for assessing the level of inclusion of fungus- and yeast-based additives in feeds

Erratum to: Genotyping bacterial and fungal pathogens using sequence variation in the gene for the CCA-adding enzyme

Divergent Evolution of Eukaryotic CC- and A-Adding Enzymes

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