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Open data
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Basic information
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| Title | PRC2_AJ1-450 bound to H3K36me3 with histone H3 tail engaged | |||||||||
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Keywords | complex / methyltransferase / histone / epigenetics / GENE REGULATION / GENE REGULATION-DNA complex | |||||||||
| Function / homology | Function and homology informationprotein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / response to tetrachloromethane / CAF-1 complex / negative regulation of keratinocyte differentiation ...protein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / response to tetrachloromethane / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity / negative regulation of retinoic acid receptor signaling pathway / cerebellar cortex development / primary miRNA binding / random inactivation of X chromosome / regulation of adaxial/abaxial pattern formation / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / regulatory ncRNA-mediated heterochromatin formation / negative regulation of cardiac muscle cell proliferation / histone H3K27 methyltransferase activity / sex chromatin / ubiquitin-modified histone reader activity / positive regulation of cell cycle G1/S phase transition / NURF complex / facultative heterochromatin formation / NuRD complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / genomic imprinting / DNA replication-dependent chromatin assembly / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / ESC/E(Z) complex / negative regulation of stem cell differentiation / regulation of stem cell differentiation / RSC-type complex / protein-lysine N-methyltransferase activity / Polo-like kinase mediated events / cardiac muscle hypertrophy in response to stress / chromatin silencing complex / histone H3K9me2/3 reader activity / Transcription of E2F targets under negative control by DREAM complex / pronucleus / positive regulation of dendrite development / G1 to G0 transition / histone H3 methyltransferase activity / histone methyltransferase activity / DNA methylation-dependent constitutive heterochromatin formation / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / ATPase complex / lncRNA binding / negative regulation of gene expression, epigenetic / synaptic transmission, GABAergic / G1/S-Specific Transcription / Sin3-type complex / Transcriptional Regulation by E2F6 / : / positive regulation of stem cell population maintenance / positive regulation of MAP kinase activity / histone methyltransferase complex / oligodendrocyte differentiation / RNA Polymerase I Transcription Initiation / histone deacetylase complex / negative regulation of transcription elongation by RNA polymerase II / G0 and Early G1 / positive regulation of GTPase activity / positive regulation of protein serine/threonine kinase activity / negative regulation of cell differentiation / cardiac muscle cell proliferation / positive regulation of epithelial to mesenchymal transition / ribonucleoprotein complex binding / subtelomeric heterochromatin formation / pericentric heterochromatin / RNA polymerase II core promoter sequence-specific DNA binding / Cyclin E associated events during G1/S transition / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / Cyclin A:Cdk2-associated events at S phase entry / nucleosome binding / keratinocyte differentiation / Chromatin modifying enzymes / spleen development / Regulation of TP53 Activity through Acetylation / protein localization to chromatin / liver regeneration / negative regulation of cytokine production involved in inflammatory response / Deposition of new CENPA-containing nucleosomes at the centromere / telomere organization / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / negative regulation of cell migration / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / thymus development / cellular response to leukemia inhibitory factor / central nervous system development / DNA methylation / B cell differentiation / epigenetic regulation of gene expression / Condensation of Prophase Chromosomes 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_43361.map.gz | 108.1 MB | EMDB map data format | |
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| Header (meta data) | emd-43361-v30.xml emd-43361.xml | 27 KB 27 KB | Display Display | EMDB header |
| Images | emd_43361.png | 20.3 KB | ||
| Filedesc metadata | emd-43361.cif.gz | 8.5 KB | ||
| Others | emd_43361_half_map_1.map.gz emd_43361_half_map_2.map.gz | 200.4 MB 200.4 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-43361 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43361 | HTTPS FTP |
-Validation report
| Summary document | emd_43361_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_43361_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_43361_validation.xml.gz | 15.6 KB | Display | |
| Data in CIF | emd_43361_validation.cif.gz | 18.4 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43361 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43361 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8vnvMC ![]() 8vmiC ![]() 8vmjC ![]() 8vmlC ![]() 8vmnC ![]() 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_43361.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: #1
| File | emd_43361_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #2
| File | emd_43361_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : PRC2_AJ1-450 bound to H3K36me3 modified nucleosome with tail engaged
+Supramolecule #1: PRC2_AJ1-450 bound to H3K36me3 modified nucleosome with tail engaged
+Macromolecule #1: Polycomb protein SUZ12
+Macromolecule #2: EED
+Macromolecule #3: RBAP48
+Macromolecule #4: Isoform 2 of Histone-lysine N-methyltransferase EZH2
+Macromolecule #5: Protein Jumonji
+Macromolecule #6: Zinc finger protein AEBP2
+Macromolecule #8: H3K36me3-modified histone H3
+Macromolecule #7: DNA (26-mer)
+Macromolecule #9: DNA (26-MER)
+Macromolecule #10: S-ADENOSYL-L-HOMOCYSTEINE
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.9 |
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| Vitrification | Cryogen name: ETHANE |
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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 / 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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Image processing
| Startup model | Type of model: EMDB MAP EMDB ID: |
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| Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 61193 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
United States, 2 items
Citation






































Z (Sec.)
Y (Row.)
X (Col.)







































FIELD EMISSION GUN

