ArticleThe Journal of biological chemistry2008
TbRGG2, an essential RNA editing accessory factor in two Trypanosoma brucei life cycle stages.
Article in The Journal of biological chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.
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Who cites it
61 citing papers in PubMed.
- KREPA6 functions in RNA editing catalytic complex structural organization and gRNA utilization in Trypanosoma brucei.Nucleic acids research · 2026Article
- How Binding Site Flexibility Promotes RNA Scanning by TbRGG2 RRM: A Molecular Dynamics Simulation Study.Journal of chemical information and modeling · 2025Article
- DRBD18 acts as a transcript-specific RNA editing auxiliary factor inRNA (New York, N.Y.) · 2025Article
- KRBP72 facilitates ATPase-dependent editing progression through a structural roadblock in mitochondrial A6 mRNA.Nucleic acids research · 2025Article
- KREH1 RNA helicase activity promotes utilization of initiator gRNAs across multiple mRNAs in trypanosome RNA editing.Nucleic acids research · 2023Article
- Structure of the T. brucei kinetoplastid RNA editing substrate-binding complex core component, RESC5.PloS one · 2023Article
- Manipulation of mitochondrial poly(A) polymerase family proteins inFrontiers in parasitology · 2023Article
- Conserved and transcript-specific functions of the RESC factors, RESC13 and RESC14, in kinetoplastid RNA editing.RNA (New York, N.Y.) · 2022Article
- Trypanosome RNAEditing Substrate Binding Complex integrity and function depends on the upstream action of RESC10.Nucleic acids research · 2021Article
- Poly(A) binding KPAF4/5 complex stabilizes kinetoplast mRNAs in Trypanosoma brucei.Nucleic acids research · 2020Article
- Sulfonated inhibitors of the RNA editing ligases validate the essential role of the MRP1/2 proteins in kinetoplastid RNA editing.RNA (New York, N.Y.) · 2020Article
- Lexis and Grammar of Mitochondrial RNA Processing in Trypanosomes.Trends in parasitology · 2020Review
- MRB10130 is a RESC assembly factor that promotes kinetoplastid RNA editing initiation and progression.RNA (New York, N.Y.) · 2019Article
- Separating the Wheat from the Chaff: RNA Editing and Selection of Translatable mRNA in Trypanosome Mitochondria.Pathogens (Basel, Switzerland) · 2019Review
- Intrinsic and regulated properties of minimally edited trypanosome mRNAs.Nucleic acids research · 2019Article
- The RNA binding activity of the first identified trypanosome protein with Z-DNA-binding domains.Scientific reports · 2019Article
- The RRM of the kRNA-editing protein TbRGG2 uses multiple surfaces to bind and remodel RNA.Nucleic acids research · 2019Article
- Combinatorial interplay of RNA-binding proteins tunes levels of mitochondrial mRNA in trypanosomes.RNA (New York, N.Y.) · 2018Article
- 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
1 more citing papers are in PubMed but not listed here.
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4 authors.
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Abstract
In the mitochondria of kinetoplastid protozoa, including Trypanosoma brucei, RNA editing inserts and/or deletes uridines from pre-mRNAs to produce mature, translatable mRNAs. RNA editing is carried out by several related multiprotein complexes known as editosomes, which contain all of the enzymatic components required for catalysis of editing. In addition, noneditosome accessory factors necessary for editing of specific RNAs have also been described. Here, we report the in vitro and in vivo characterization of the mitochondrial TbRGG2 protein (originally termed TbRGGm) and demonstrate that it acts as an editing accessory factor. TbRGG2 is an RNA-binding protein with a preference for poly(U). TbRGG2 protein levels are up-regulated 10-fold in procyclic form T. brucei compared with bloodstream forms. Nevertheless, the protein is essential for growth in both life cycle stages. TbRGG2 associates with RNase-sensitive and RNase-insensitive mitochondrial complexes, and a small fraction of the protein co-immunoprecipitates with editosomes. RNA interference-mediated depletion of TbRGG2 in both procyclic and bloodstream form T. brucei leads to a dramatic decrease in pan-edited RNAs and in some cases a corresponding increase in the pre-edited RNA. TbRGG2 down-regulation also results in moderate stabilization of never-edited and minimally edited RNAs. Thus, our data are consistent with a model in which TbRGG2 is multifunctional, strongly facilitating the editing of pan-edited RNAs and modestly destabilizing minimally edited and never-edited RNAs. This is the first example of an RNA editing accessory factor that functions in the mammalian infective T. brucei life cycle stage.
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