ArticleNucleic acids research2022
Trypanosoma brucei histones are heavily modified with combinatorial post-translational modifications and mark Pol II transcription start regions with hyperacetylated H2A.
Article in Nucleic acids research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 30 citations in OpenAlex.
- Article
- Genome-wide mapping of DNA G-quadruplexes in Trypanosoma brucei chromatin reveals enrichment in coding regions and transcription start sites.Nucleic acids research · 2026Article
- Article
- Article
- Article
- Cleavage Under Targets and Release Using Nuclease (CUT&RUN) for Trypanosoma brucei Parasites.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Protein arginine methyltransferases in protozoan parasites: a new path for antiparasitic chemotherapy?Microbial cell (Graz, Austria) · 2026Article
- Histone post-translational modifications of Leishmania braziliensis.Scientific data · 2025Article
- Precision-edited histone tails disrupt polycistronic gene expression controls in trypanosomes.Nature communications · 2025Article
- Review
- Trypanosomatid histones: the building blocks of the epigenetic code of highly divergent eukaryotes.The Biochemical journal · 2025Review
- Mono-allelic epigenetic regulation of polycistronic transcription initiation by RNA polymerase II inmBio · 2025Article
- Exploring the activity of the putative Δ6-desaturase and its role in bloodstream form life-cycle transitions in Trypanosoma brucei.PLoS pathogens · 2025Article
- Genome-wide chromatin interaction map for Trypanosoma cruzi.Nature microbiology · 2023Article
- Histone divergence in trypanosomes results in unique alterations to nucleosome structure.Nucleic acids research · 2023Article
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Authors and funding
6 authors at 3 institutions in 3 countries.
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Abstract
Trypanosomes diverged from the main eukaryotic lineage about 600 million years ago, and display some unusual genomic and epigenetic properties that provide valuable insight into the early processes employed by eukaryotic ancestors to regulate chromatin-mediated functions. We analysed Trypanosoma brucei core histones by high mass accuracy middle-down mass spectrometry to map core histone post-translational modifications (PTMs) and elucidate cis-histone combinatorial PTMs (cPTMs). T. brucei histones are heavily modified and display intricate cPTMs patterns, with numerous hypermodified cPTMs that could contribute to the formation of non-repressive euchromatic states. The Trypanosoma brucei H2A C-terminal tail is hyperacetylated, containing up to five acetylated lysine residues. MNase-ChIP-seq revealed a striking enrichment of hyperacetylated H2A at Pol II transcription start regions, and showed that H2A histones that are hyperacetylated in different combinations localised to different genomic regions, suggesting distinct epigenetic functions. Our genomics and proteomics data provide insight into the complex epigenetic mechanisms used by this parasite to regulate a genome that lacks the transcriptional control mechanisms found in later-branched eukaryotes. The findings further demonstrate the complexity of epigenetic mechanisms that were probably shared with the last eukaryotic common ancestor.
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