ArticleNature communications2025
APC/C-mediated ubiquitylation of extranucleosomal histone complexes lacking canonical degrons.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- PCIPG2.0: multi-omics fusion and structure-aware graph autoencoding for protein complex identification.Bioinformatics (Oxford, England) · 2026Article
- The Mechanism of Histone Ubiquitylation by the ASB9-CUL5 Ubiquitin Ligase.Molecular & cellular proteomics : MCP · 2026Article
- E3 ubiquitin ligases in neurodegenerative diseases.Military Medical Research · 2026Review
- FBXL8 Stabilizes IκBα and Negatively Regulated NF-κB Activation to Suppress Pancreatic Cancer Progression.International journal of biological sciences · 2026Article
- Post-translational modification of H2B C-terminal helix regulates nucleosome interactions and chromatin signaling.Nucleic acids research · 2025Article
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Authors and funding
19 authors.
Funding
Abstract
Non-degradative histone ubiquitylation plays a myriad of well-defined roles in the regulation of gene expression and choreographing DNA damage repair pathways. In contrast, the contributions of degradative histone ubiquitylation on genomic processes has remained elusive. Recently, the APC/C has been shown to ubiquitylate histones to regulate gene expression in pluripotent cells, but the molecular mechanism is unclear. Here we show that despite directly binding to the nucleosome through subunit APC3, the APC/C is unable to ubiquitylate nucleosomal histones. In contrast, extranucleosomal H2A/H2B and H3/H4 complexes are broadly ubiquitylated by the APC/C in an unexpected manner. Using a combination of cryo-electron microscopy (cryo-EM) and biophysical and enzymatic assays, we demonstrate that APC8 and histone tails direct APC/C-mediated polyubiquitylation of core histones in the absence of traditional APC/C substrate degron sequences. Taken together, our work implicates APC/C-nucleosome tethering in the degradation of diverse chromatin-associated proteins and extranucleosomal histones for the regulation of transcription and the cell cycle and for preventing toxicity due to excess histone levels.
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Registered trials
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