ArticleNucleic acids research2015
The ancestor of modern Holozoa acquired the CCA-adding enzyme from Alphaproteobacteria by horizontal gene transfer.
Article in Nucleic acids research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 19 citations in OpenAlex.
- Relative timing information and orthology in evolutionary scenarios.Algorithms for molecular biology : AMB · 2023Article
- CCA-Addition Gone Wild: Unusual Occurrence and Phylogeny of Four Different tRNA Nucleotidyltransferases in Acanthamoeba castellanii.Molecular biology and evolution · 2021Article
- CCA-addition in the cold: Structural characterization of the psychrophilic CCA-adding enzyme from the permafrost bacteriumComputational and structural biotechnology journal · 2021Article
- Unusual Occurrence of Two Bona-Fide CCA-Adding Enzymes inInternational journal of molecular sciences · 2020Article
- Article
- Divergent Evolution of Eukaryotic CC- and A-Adding Enzymes.International journal of molecular sciences · 2020Article
- Phylogeny and Evolution of RNA 3'-Nucleotidyltransferases in Bacteria.Journal of molecular evolution · 2019Article
- Genotyping bacterial and fungal pathogens using sequence variation in the gene for the CCA-adding enzyme.BMC microbiology · 2016Article
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Authors and funding
7 authors at 2 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Transfer RNAs (tRNAs) require the absolutely conserved sequence motif CCA at their 3'-ends, representing the site of aminoacylation. In the majority of organisms, this trinucleotide sequence is not encoded in the genome and thus has to be added post-transcriptionally by the CCA-adding enzyme, a specialized nucleotidyltransferase. In eukaryotic genomes this ubiquitous and highly conserved enzyme family is usually represented by a single gene copy. Analysis of published sequence data allows us to pin down the unusual evolution of eukaryotic CCA-adding enzymes. We show that the CCA-adding enzymes of animals originated from a horizontal gene transfer event in the stem lineage of Holozoa, i.e. Metazoa (animals) and their unicellular relatives, the Choanozoa. The tRNA nucleotidyltransferase, acquired from an α-proteobacterium, replaced the ancestral enzyme in Metazoa. However, in Choanoflagellata, the group of Choanozoa that is closest to Metazoa, both the ancestral and the horizontally transferred CCA-adding enzymes have survived. Furthermore, our data refute a mitochondrial origin of the animal tRNA nucleotidyltransferases.
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