ArticleGenes to cells : devoted to molecular & cellular mechanisms2024
Mode of SUV420H2 heterochromatin localization through multiple HP1 binding motifs in the heterochromatic targeting module.
Article in Genes to cells : devoted to molecular & cellular mechanisms, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 7 citations in OpenAlex.
- HPL-2/HP1 and MET-2/SETDB1 bind distinct co-factors that promote heterochromatic foci, gene repression and organogenesis independently of H3K9 methylation.bioRxiv : the preprint server for biology · 2026Article
- Hat1 Orchestrates Heterochromatin Inheritance by Regulating Localization of H3K9 Methyltransferases.bioRxiv : the preprint server for biology · 2026Article
- Review
- Mode of SUV420H2 heterochromatin localization through multiple HP1 binding motifs in the heterochromatic targeting module.Genes to cells : devoted to molecular & cellular mechanisms · 2024Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 2 countries.
Funding
Abstract
Constitutive heterochromatin is transcriptionally repressed and densely packed chromatin, typically harboring histone H3 Lys9 trimethylation (H3K9me3) and heterochromatin protein 1 (HP1). SUV420H2, a histone H4 Lys20 methyltransferase, is recruited to heterochromatin by binding to HP1 through its Heterochromatic Targeting Module (HTM). Here, we have identified three HP1 binding motifs within the HTM. Both the full-length HTM and its N-terminal region (HTM-N), which contains the first and second motifs, stabilized HP1 on heterochromatin. The intervening region between the first and second HP1 binding motifs in HTM-N was also crucial for HP1 binding. In contrast, the C-terminal region of HTM (HTM-C), containing the third motif, destabilized HP1 on chromatin. An HTM V374D mutant, featuring a Val374 to Asp substitution in the second HP1 binding motif, localizes to heterochromatin without affecting HP1 stability. These data suggest that the second HP1 binding motif in the SUV420H2 HTM is critical for locking HP1 on H3K9me3-enriched heterochromatin. HTM V374D, tagged with a fluorescent protein, can serve as a live-cell probe to visualize HP1-bound heterochromatin.
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Registered trials
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