ArticleNucleic acids research2024
Interactome of intact chromatosome variants with site-specifically ubiquitylated and acetylated linker histone H1.2.
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 3 papers.
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Who cites it
3 citing papers in PubMed.
- Deacetylase-independent HDAC1 condensation defines temozolomide response in glioblastoma.Nature chemical biology · 2026Article
- A Site-Specific Click Chemistry Approach to Di-Ubiquitylate H1 Variants Reveals Position-Dependent Stimulation of the DNA Repair Protein RNF168.Angewandte Chemie (International ed. in English) · 2024Article
- Genetic Code Expansion Approaches to Decipher the Ubiquitin Code.Chemical reviews · 2024Review
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Authors and funding
4 authors.
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Abstract
Post-translational modifications (PTMs) of histones have fundamental effects on chromatin structure and function. While the impact of PTMs on the function of core histones are increasingly well understood, this is much less the case for modifications of linker histone H1, which is at least in part due to a lack of proper tools. In this work, we establish the assembly of intact chromatosomes containing site-specifically ubiquitylated and acetylated linker histone H1.2 variants obtained by a combination of chemical biology approaches. We then use these complexes in a tailored affinity enrichment mass spectrometry workflow to identify and comprehensively characterize chromatosome-specific cellular interactomes and the impact of site-specific linker histone modifications on a proteome-wide scale. We validate and benchmark our approach by western-blotting and by confirming the involvement of chromatin-bound H1.2 in the recruitment of proteins involved in DNA double-strand break repair using an in vitro ligation assay. We relate our data to previous work and in particular compare it to data on modification-specific interaction partners of free H1. Taken together, our data supports the role of chromatin-bound H1 as a regulatory protein with distinct functions beyond DNA compaction and constitutes an important resource for future investigations of histone epigenetic modifications.
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Registered trials
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