ArticleProceedings of the National Academy of Sciences of the United States of America2011
Trypanosome REH1 is an RNA helicase involved with the 3'-5' polarity of multiple gRNA-guided uridine insertion/deletion RNA editing.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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Who cites it
38 citing papers in PubMed, 53 citations in OpenAlex.
- The kinetoplastid-specific transcription factor mtTF1 is essential for mitochondrial gene expression and maxicircle replication in Trypanosoma brucei.PLoS biology · 2026Article
- RNA editing catalytic complexes edit multiple mRNA sites non-processively in Trypanosoma brucei.Molecular and biochemical parasitology · 2023Article
- Trypanosome RNA helicase KREH2 differentially controls non-canonical editing and putative repressive structure via a novel proposed 'bifunctional' gRNA in mRNA A6.Nucleic acids research · 2023Article
- KREH1 RNA helicase activity promotes utilization of initiator gRNAs across multiple mRNAs in trypanosome RNA editing.Nucleic acids research · 2023Article
- Fuzzy RNA recognition by the Trypanosoma brucei editosome.Nucleic acids research · 2022Article
- Parallel monitoring of RNA abundance, localization and compactness with correlative single molecule FISH on LR White embedded samples.Nucleic acids research · 2021Article
- DDX3 DEAD-box RNA helicase (Hel67) gene disruption impairs infectivity of Leishmania donovani and induces protective immunity against visceral leishmaniasis.Scientific reports · 2020Article
- Lexis and Grammar of Mitochondrial RNA Processing in Trypanosomes.Trends in parasitology · 2020Review
- Separating the Wheat from the Chaff: RNA Editing and Selection of Translatable mRNA in Trypanosome Mitochondria.Pathogens (Basel, Switzerland) · 2019Review
- Protein features for assembly of the RNA editing helicase 2 subcomplex (REH2C) in Trypanosome holo-editosomes.PloS one · 2019Article
- Dynamic RNA holo-editosomes with subcomplex variants: Insights into the control of trypanosome editing.Wiley interdisciplinary reviews. RNA · 2018Review
- MRB7260 is essential for productive protein-RNA interactions within the RNA editing substrate binding complex during trypanosome RNA editing.RNA (New York, N.Y.) · 2018Article
- RNA-seq transcriptional profiling of Leishmania amazonensis reveals an arginase-dependent gene expression regulation.PLoS neglected tropical diseases · 2017Article
- Trypanosome RNA Editing Mediator Complex proteins have distinct functions in gRNA utilization.Nucleic acids research · 2017Article
- DDX3 DEAD-box RNA helicase plays a central role in mitochondrial protein quality control in Leishmania.Cell death & disease · 2016Article
- High-throughput sequencing of partially edited trypanosome mRNAs reveals barriers to editing progression and evidence for alternative editing.RNA (New York, N.Y.) · 2016Article
- U-Insertion/Deletion mRNA-Editing Holoenzyme: Definition in Sight.Trends in parasitology · 2016Review
- The RNA chaperone activity of the Trypanosoma brucei editosome raises the dynamic of bound pre-mRNAs.Scientific reports · 2016Article
- Article
- U-insertion/deletion RNA editing multiprotein complexes and mitochondrial ribosomes in Leishmania tarentolae are located in antipodal nodes adjacent to the kinetoplast DNA.Mitochondrion · 2015Article
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
Abstract
Uridine insertion/deletion RNA editing in kinetoplastid mitochondria corrects encoded frameshifts in mRNAs. The genetic information for editing resides in small guide RNAs (gRNAs), which form anchor duplexes just downstream of an editing site and mediate editing within a single editing "block." Many mRNAs require multiple gRNAs; the observed overall 3' to 5' polarity of editing is determined by the formation of upstream mRNA anchors by downstream editing. Hel61, a mitochondrial DEAD-box protein, was previously shown to be involved in RNA editing, but the functional role was not clear. Here we report that down-regulation of Hel61 [renamed REH1 (RNA editing helicase 1)] expression in Trypanosoma brucei selectively affects editing mediated by two or more overlapping gRNAs but has no effect on editing within a single block. Down-regulation produces an increased abundance of the gRNA/edited mRNA duplex for the first editing block of the A6 mRNA. Recombinant REH1 has an ATP-dependent double strand RNA unwinding activity in vitro with a model gRNA-mRNA duplex. These data indicate that REH1 is involved in gRNA displacement either directly by unwinding the gRNA/edited mRNA duplex or indirectly, to allow the 5' adjacent upstream gRNA to form an anchor duplex with the edited mRNA to initiate another block of editing. Purified tagged REH1 is associated with the RNA editing core complex by RNA linkers and a colocalization of REH1, REL1, and two kinetoplast ribosomal proteins with the kinetoplast DNA was observed by immunofluorescence, suggesting that editing, transcription, and translation may be functionally linked.
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