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Open data
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Basic information
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| Title | PRC2_AJ119-450 bound to H3K4me3 | |||||||||
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Keywords | complex / methyltransferase / histone / epigenetics / GENE REGULATION | |||||||||
| Function / homology | Function and homology informationregulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / spermatogonial cell division / CAF-1 complex / negative regulation of retinoic acid receptor signaling pathway / histone H3K27 trimethyltransferase activity / primary miRNA binding / histone H3K27 methyltransferase activity / RSC-type complex / ubiquitin-modified histone reader activity ...regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / spermatogonial cell division / CAF-1 complex / negative regulation of retinoic acid receptor signaling pathway / histone H3K27 trimethyltransferase activity / primary miRNA binding / histone H3K27 methyltransferase activity / RSC-type complex / ubiquitin-modified histone reader activity / sex chromatin / positive regulation of cell cycle G1/S phase transition / NURF complex / regulatory ncRNA-mediated heterochromatin formation / facultative heterochromatin formation / NuRD complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / DNA replication-dependent chromatin assembly / regulation of stem cell differentiation / ESC/E(Z) complex / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / protein-lysine N-methyltransferase activity / Polo-like kinase mediated events / chromatin silencing complex / Transcription of E2F targets under negative control by DREAM complex / pronucleus / positive regulation of dendrite development / histone H3K9me2/3 reader activity / positive regulation of protein serine/threonine kinase activity / histone H3 methyltransferase activity / spinal cord development / synaptic transmission, GABAergic / histone methyltransferase activity / negative regulation of gene expression, epigenetic / Sin3-type complex / G1/S-Specific Transcription / positive regulation of stem cell population maintenance / positive regulation of MAP kinase activity / histone deacetylase complex / lncRNA binding / histone methyltransferase complex / Transcriptional Regulation by E2F6 / negative regulation of cell differentiation / RNA Polymerase I Transcription Initiation / G0 and Early G1 / subtelomeric heterochromatin formation / positive regulation of GTPase activity / positive regulation of epithelial to mesenchymal transition / ribonucleoprotein complex binding / Cyclin E associated events during G1/S transition / pericentric heterochromatin / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / RNA polymerase II core promoter sequence-specific DNA binding / Cyclin A:Cdk2-associated events at S phase entry / Regulation of TP53 Activity through Acetylation / B cell differentiation / nucleosome binding / stem cell differentiation / Chromatin modifying enzymes / heterochromatin / negative regulation of cytokine production involved in inflammatory response / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / negative regulation of cell migration / telomere organization / Interleukin-7 signaling / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / negative regulation of transforming growth factor beta receptor signaling pathway / hippocampus development / RNA Polymerase I Promoter Opening / transcription corepressor binding / Inhibition of DNA recombination at telomere / Regulation of PTEN gene transcription / Assembly of the ORC complex at the origin of replication / Meiotic synapsis / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / condensed nuclear chromosome / DNA methylation / Condensation of Prophase Chromosomes / central nervous system development / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / brain development / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / ubiquitin binding / HDACs deacetylate histones / Transcriptional regulation by small RNAs / promoter-specific chromatin binding / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Cookis T / Nogales E | |||||||||
| Funding support | United States, 2 items
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Citation | Journal: Nat Struct Mol Biol / Year: 2025Title: Structural basis for the inhibition of PRC2 by active transcription histone posttranslational modifications. Authors: Trinity Cookis / Alexandria Lydecker / Paul Sauer / Vignesh Kasinath / Eva Nogales / ![]() Abstract: Polycomb repressive complex 2 (PRC2) trimethylates histone H3 on K27 (H3K27me3) leading to gene silencing that is essential for embryonic development and maintenance of cell identity. PRC2 is ...Polycomb repressive complex 2 (PRC2) trimethylates histone H3 on K27 (H3K27me3) leading to gene silencing that is essential for embryonic development and maintenance of cell identity. PRC2 is regulated by protein cofactors and their crosstalk with histone modifications. Trimethylated histone H3 on K4 (H3K4me3) and K36 (H3K36me3) localize to sites of active transcription and inhibit PRC2 activity through unknown mechanisms. Using cryo-electron microscopy, we reveal that histone H3 tails containing H3K36me3 engage poorly with PRC2 and preclude its effective interaction with chromatin, while H3K4me3 binds to the allosteric site in the EED subunit, acting as an antagonist that competes with activators required for spreading of the H3K27me3 repressive mark. Thus, the location of the H3K4me3 and H3K36me3 modifications along the H3 tail allows them to target two requirements for efficient trimethylation of H3K27 by PRC2. We further show that the JARID2 cofactor modulates PRC2 activity in the presence of these histone modifications. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_43357.map.gz | 5.4 MB | EMDB map data format | |
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| Header (meta data) | emd-43357-v30.xml emd-43357.xml | 28.3 KB 28.3 KB | Display Display | EMDB header |
| Images | emd_43357.png | 22.1 KB | ||
| Filedesc metadata | emd-43357.cif.gz | 9.4 KB | ||
| Others | emd_43357_half_map_1.map.gz emd_43357_half_map_2.map.gz | 200.6 MB 200.6 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-43357 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43357 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8vmiMC ![]() 8vmjC ![]() 8vmlC ![]() 8vmnC ![]() 8vnvC ![]() 8vnzC ![]() 8vo0C ![]() 8vobC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_43357.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.05 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_43357_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_43357_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : PRC2_AJ119-450 bound to H3K4me3-modified nucleosome
+Supramolecule #1: PRC2_AJ119-450 bound to H3K4me3-modified nucleosome
+Macromolecule #1: Polycomb protein EED
+Macromolecule #2: Histone H3.1
+Macromolecule #3: Polycomb protein SUZ12
+Macromolecule #4: Histone-binding protein RBBP4
+Macromolecule #5: EZH2
+Macromolecule #6: Protein Jumonji
+Macromolecule #7: Isoform 3 of Zinc finger protein AEBP2
+Macromolecule #8: Histone H3.1t
+Macromolecule #9: ZINC ION
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.28 mg/mL |
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| Buffer | pH: 7.5 |
| Grid | Model: Quantifoil R2/1 / Material: GOLD / Mesh: 300 |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 291 K / Instrument: LEICA EM GP |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
United States, 2 items
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Y (Row.)
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Processing
FIELD EMISSION GUN

