ArticleNucleic acids research2024
Blastocrithidia nonstop mitochondrial genome and its expression are remarkably insulated from nuclear codon reassignment.
Article in Nucleic acids research, 2024. 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, 12 citations in OpenAlex.
- Assembly and Annotation of Kinetoplastid and Diplonemid Mitochondrial Genomes.Methods in molecular biology (Clifton, N.J.) · 2026Article
- The mitochondrial proteome of diplonemids: from conventional pathways to eccentric RNA editing and transcript processing.BMC genomics · 2025Article
- Kinetoplast DNA structure, RNA editing patterns and small respiratory Complex I in Trypanosoma musculi.Communications biology · 2025Article
- Leishmania mexicana telomeres at high resolution: Ku80, TERT, and alternative lengthening mechanisms.BMC genomics · 2025Article
- Article
- Converting Blastocrithidia Nonstop, a Trypanosomatid With Non-Canonical Genetic Code, Into a Genetically-Tractable Model.Molecular microbiology · 2025Article
- Evolutionary divergent kinetoplast genome structure and RNA editing patterns in the trypanosomatidProceedings of the National Academy of Sciences of the United States of America · 2025Article
- Stunning Intricacies of RNA Editing Complexes RECC, RESC, and REH2C: Functional Organization, Developmental Regulation, and Evolutionary History in Kinetoplastid Protists.Wiley interdisciplinary reviews. RNAReview
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Authors and funding
14 authors at 8 institutions in 6 countries.
Funding
Abstract
The canonical stop codons of the nuclear genome of the trypanosomatid Blastocrithidia nonstop are recoded. Here, we investigated the effect of this recoding on the mitochondrial genome and gene expression. Trypanosomatids possess a single mitochondrion and protein-coding transcripts of this genome require RNA editing in order to generate open reading frames of many transcripts encoded as 'cryptogenes'. Small RNAs that can number in the hundreds direct editing and produce a mitochondrial transcriptome of unusual complexity. We find B. nonstop to have a typical trypanosomatid mitochondrial genetic code, which presumably requires the mitochondrion to disable utilization of the two nucleus-encoded suppressor tRNAs, which appear to be imported into the organelle. Alterations of the protein factors responsible for mRNA editing were also documented, but they have likely originated from sources other than B. nonstop nuclear genome recoding. The population of guide RNAs directing editing is minimal, yet virtually all genes for the plethora of known editing factors are still present. Most intriguingly, despite lacking complex I cryptogene guide RNAs, these cryptogene transcripts are stochastically edited to high levels.
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